B
BACTERIA n pl tiny animals that cause illnesses or changes in the nature of substances: She cleaned the sink with a detergent designed to kill bacteria. bacterial adj to do with bacteria: The doctor said the child was suffering from a bacterial infection. bacteriological adj to do with bacteria: The soldiers wore special suits to protect them from bacteriological weapons. bacteriologist n expert in bacteriology: She studied medicine and decided to become a bacteriologist. bacteriology n study of bacteria: The exact nature of the disease was established through bacteriology.
BACK n 1 side of an animal’s body that is opposite the front or (of four-footed animals) highest from the ground: The dog rolled onto its back. 2 part of an object that is opposite or furthest away from the front or that is out of sight: Cars are parked at the back of the building. 3 player in some games, such as football, who tries to stop the other side from attacking: The opposition’s right back was sent off for fouling. back adj 1 that is behind: I knocked on the back door of the house. 2 late; that should have been paid sooner: We’ll be evicted if we don’t pay the back rent. 3 past: Look through back issues of the magazine until you find the article. back adv 1 away from the front or the scene of action: The enemy attacked fiercely then fell back. 2 (to) where the person or thing was before: They were back for lunch. Put that back, you naughty boy. 3 in return: Don’t hit back if you’re attacked. 4 ago; in the past: I knew him well, some years back. back vb 1 move backwards: A car was backing out of the garage. 2 support or encourage: Why don’t you back your local team? 3 put money into a project, or bet on horses, etc.: She backed the winner in the Grand National. background n 1 conditions, events, etc., that exist when something happens: The story unfolds against the background of the Civil War. 2 social class from which someone comes: The teacher always tried to help children from poor backgrounds. backing n support or encouragement: The project cannot succeed without substantial government backing. backward adj late in developing: This society is considered backward in comparison to developed countries. backward adv also backwards 1 in the direction in which the back is facing: She took a backward step in surprise. 2 from the end to the beginning: We got there in an hour but travelling backward took much longer.
BAD adj 1 of poor quality: Her essay was so bad that it earned no marks at all. 2 morally wrong or evil: Only a very bad person could commit such a crime. 3 harmful: Eating too much fat is bad for you. 4 unsuitable for a particular purpose: It was a bad idea to travel at a holiday weekend. 5 serious: He caught a bad cold and had to stay off school. 6 rotten or sour: One of the eggs in the box was bad. badly adv 1 in a bad way: The painting had been badly done. 2 very much: I badly need to go. badness n state of being bad: The badness of her handiwork was immediately obvious. worse adj 1 more bad: the day started off sunny, but worse weather was to follow. worse adv more badly: My brother played worse than me in the football game. worsen vb become worse: The weather was rapidly worsening. worst adj most bad: It was the worst film I’ve ever seen. worst adv most badly: Which of your classmates performed worst in the test?
BAKE 1 vb cook food in an oven: You can either boil or bake the potatoes. 2 vb (informal) be very hot: Rome was baking in midsummer heat. baker n person who makes and sells bread: A delicious aroma was coming from the baker’s shop. bakery n place where bread is made: Go down to the bakery and buy a loaf. baking n 1 act of cooking food in an oven: I’m becoming quite good at baking. 2 baked food: There was a stall selling home baking. baking adj very hot: Many Parisians leave the city in the baking heat of August.
BALANCE n 1 upright position kept by the even spread of weight: I staggered briefly but soon regained my balance. 2 state of containing the right amount of each of the elements of a thing: A healthy diet involves a proper balance of different foods. 3 amount of money still owed: You can pay a deposit now and pay the balance on delivery. balance vb 1 (cause to) be in balance: She was balancing on top of the wall. 2 consider the force of various arguments: We have to balance his account against what the others have said. 3 cause money paid and received to be equal: the accountant’s job is to balance the accounts of the business. 4 be equal: The amounts of income and expenditure do not balance. balanced adj 1 considering various arguments: You can depend on this newspaper to give a balanced account of events. 2 containing the right amount of each of the elements of a thing: The secret of staying healthy is to have a balanced diet. 3 calm and sensible: She’s the kind of balanced individual that people go to for advice. unbalanced adj The journalist was accused of unbalanced reporting. The doctor said her unbalanced diet was making her ill. I started to believe that he was mentally unbalanced.
BALD adj 1 with little or no hair on your head: He was a bald man of about forty. 2 plainly stated: Just give me the bald facts. balding adj losing your hair: She described him as six feet tall, balding, and smartly dressed. baldly adv Baldly put, the country is in a bad way. baldness n 1 lack of hair: Baldness seems to run in his family. 2 plainness: The baldness of his account didn’t convey the victims’ suffering.
BALLOON n 1 very light rubber bag filled with air for children to play with: Every party guest was given a balloon and a paper hat. 2 large bag that floats in the air when filled with a gas that is lighter than air: One day I’d like to have a flight in a balloon. ballooning n sport of flying in a basket below a balloon: One of my hobbies is hot-air ballooning. balloonist n person who flies in a basket hanging below a balloon: At the air fair a balloonist was offering to take passengers up for a brief flight.
BAN vb 1 forbid something: It was decided to ban smoking in public places. 2 refuse a right, membership, etc., to someone: After the crash she was banned from driving for a year. ban n act of banning or state of being banned: A total ban on smoking came into force. banned adj forbidden: These dogs have been trained to sniff out banned substances in luggage. banning n forbidding: The banning of drink-driving has undoubtedly saved many lives.
BANK n organization that looks after money for its customers: I went to the bank to withdraw some cash. bank vb 1 put money into a bank: The business banks most of its profits but reinvests some. 2 have an account with a bank: She banks with the same bank as her parents. banker n person holding a high position in a bank: He works in the city as an investment banker. banking n business of banks and bankers: She chose a career in banking.
BANKRUPT adj with no money left to pay your debts: Bankrupt person are usually unable to borrow money. bankrupt n bankrupt person: They bought the house cheaply from a bankrupt. bankrupt vb make bankrupt: Many people were bankrupted by the recession. bankruptcy n state of being bankrupt: The workers all lost their jobs when the company had to declare bankruptcy.
BAR n 1 piece of hard substance, longer than it is wide: The victim was struck on the head with an iron bar. I bought a bar of chocolate and a fizzy drink. 2 something that prevents or forbids: Poverty should not be a bar to a good education. 3 regular division of a piece of music: She was counting the number of beats to the bar. 4 place where drinks are served in a pub, etc.: I’ll meet you in the bar at lunchtime. bar vb 1 forbid an action: Regulations bar you from keeping a pet in your apartment. 2 keep someone out: His unruly behaviour forced the committee to bar him from the club. 3 block a road: The rebels barred the road with stolen vehicles. barred adj fitted with metal bars to prevent entry or exit: I couldn’t...