bolt - definition in the American English Dictionary - Cambridge Dictionaries Online

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English definition of “bolt”

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bolt

noun [C]  us   /boʊlt/

bolt noun [C] (LOCK)

a small metal bar that slides across a door or window to lock it: I fastened the door with a bolt. A bolt is also a part of a gun that pushes the cartridge (= container filled with explosive powder) into position to be fired.

bolt noun [C] (SCREW)

a metal screw without a point, used to fasten things together, often with a nut (= small piece of metal that attaches to it)

bolt noun [C] (LIGHTNING)

a flash of lightning, esp. followed by thunder: Did a bolt of lightning set fire to the barn?

bolt noun [C] (ROLL)

a roll of cloth or paper, esp. wallpaper

bolt

verb  us   /boʊlt/

bolt verb (MOVE SUDDENLY)

[I/T] to move suddenly and quickly: [I] At the first whiff of smoke, the horse bolted from the barn. [M] He bolted down some breakfast.

bolt verb (LOCK)

[T] to lock a door or window with a bolt: Be sure to bolt the door when you go to bed!

bolt verb (SCREW)

[T always + adv/prep] to fasten two things together with a bolt: He sat on a wooden bench bolted to the floor.
(Definition of bolt from the Cambridge Academic Content Dictionary © Cambridge University Press)
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