WordReference Random House Learner's Dictionary of American English © 2015
bolt1 /boʊlt/USA pronunciation
Building[~ + object] to fasten with or as if with a bolt:He bolted the muffler back onto the car.
[no object] to make a sudden run or escape:He bolted from the room.
Governmentto discontinue support (of) or participation (in); break with: [~ + object]She decided to bolt the Republican party and vote Democratic.[no object]Twenty Democrats bolted on that vote.
to swallow (one's food or drink) quickly: [~ + object]He bolted his breakfast and ran to catch his train.[~ + down + object]He bolted down his breakfast.[~ + object + down]He bolted his breakfast down.
- Buildingany of several types of strong screws threaded to receive a nut and used to hold things together:Tighten the bolts with a good wrench.
- Buildinga movable bar slid into a socket to fasten a door, etc.:The jailer threw back the bolt on the old, rusty prison door.
- Buildingthe part of a lock drawn back by the action of the key.
- a sudden dash, flight, or escape:The mouse made a quick bolt to get away.
- Textilesa length of fabric, woven goods, etc., esp. as it comes on a roll from the loom.
- Military(on a rifle) a sliding bar that pushes a cartridge into the firing chamber.
- a thunderbolt:Jupiter hurling his bolts to earth.
- Idioms bolt out of or from the blue, a sudden and entirely unforeseen event:The news that she would not be rehired came as a bolt from the blue.
- Idioms bolt upright, stiffly or rigidly straight: He sat bolt upright when the teacher caught him napping.
Collins Concise English Dictionary © HarperCollins Publishers::
bolt /bəʊlt/ n
- a bar that can be slid into a socket to lock a door, gate, etc
- a bar or rod that forms part of a locking mechanism and is moved by a key or a knob
- a metal rod or pin that has a head at one end and a screw thread at the other to take a nut
- a sliding bar in a breech-loading firearm that ejects the empty cartridge, replaces it with a new one, and closes the breech
- a flash of lightning
- a sudden start or movement, esp in order to escape
- a roll of something, such as cloth, wallpaper, etc
- an arrow, esp for a crossbow
- a bolt from the blue ⇒ a sudden, unexpected, and usually unwelcome event
- shoot one's bolt ⇒ to exhaust one's effort
- (transitive) to secure or lock with or as with a bolt or bolts: bolt your doors
- (transitive) to eat hurriedly: don't bolt your food
- (intr; usually followed by from or out) to move or jump suddenly: he bolted from the chair
- (intransitive) (esp of a horse) to start hurriedly and run away without warning
- (transitive) to roll or make (cloth, wallpaper, etc) into bolts
- (intransitive) (of cultivated plants) to produce flowers and seeds prematurely
Etymology: Old English bolt arrow; related to Old High German bolz bolt for a crossbow
- stiffly, firmly, or rigidly (archaic except in the phrase bolt upright)
bolt, boult /bəʊlt/ vb (transitive)
Etymology: 13th Century: from Old French bulter, probably of Germanic origin; compare Old High German būtil bagˈbolter, ˈboulter n
- to pass (flour, a powder, etc) through a sieve
- to examine and separate
Bolt /bəʊlt/ n
- Robert (Oxton). 1924–95, British playwright. His plays include A Man for All Seasons (1960) and he also wrote a number of screenplays
'bolt' also found in these entries: