Collins Primary Illustrated Dictionary. Collins Dictionaries

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      VERB 2 If you bolt one thing to another, you fasten them together using a bolt. • They bolted the chair to the floor.

      3 If you bolt a door or window, you slide a metal bar across in order to fasten it.

      bomb bombs, bombing, bombed

      NOUN 1 a container filled with material that explodes when it hits something or when it is set off by a timer

      VERB 2 If you bomb something, you attack it with a bomb.

      [from Greek bombos meaning a booming sound]

      bond bonds

      NOUN a close relationship between people • the bond between mothers and babies

      bone bones

      NOUN the hard parts that form the framework of a person’s or animal’s body

      bonfire bonfires

      NOUN a large fire made outdoors, to burn rubbish or to celebrate something

      [from bone + fire – bones were used as fuel in the Middle Ages]

      bonnet bonnets

      NOUN 1 the metal cover over a car’s engine

      2 a baby’s or woman’s hat tied under the chin

      bonus bonuses

      NOUN 1 an amount of money added to a person’s usual pay

      2 a good thing that you get in addition to something else

      bony bonier, boniest

      ADJECTIVE Bony people or animals are very thin, with not much flesh covering their bones.

      book books, booking, booked

      NOUN 1 a number of pages held together inside a cover

      VERB 2 When you book something, you arrange to have it or use it at a particular time. • Mum booked two rooms at the hotel.

      bookcase bookcases

      NOUN a piece of furniture where you keep books

      booklet booklets

      NOUN a small book with a paper cover

      boom booms, booming, boomed

      NOUN 1 a deep, echoing sound

      2 a fast increase in something • There has been a boom in the sale of sun cream this summer.

      VERB 3 If something booms, it makes a loud booming sound. • We heard the foghorn boom in the distance.

      boomerang boomerangs

      NOUN a curved, wooden missile that can be thrown so that it returns to the thrower. Boomerangs were traditionally used as weapons by Australian Aborigines.