UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈbəʊlt/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/boʊlt/ ,USA pronunciation: respelling(bōlt)

Collins Concise English Dictionary © HarperCollins Publishers::
Bolt /bəʊlt/ n
  1. Robert (Oxton). 1924–95, British playwright. His plays include A Man for All Seasons (1960) and he also wrote a number of screenplays
WordReference Random House Learner's Dictionary of American English © 2020
bolt1 /boʊlt/USA pronunciation   n. 
  1. 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.
  2. Buildinga movable bar slid into a socket to fasten a door, etc.:The jailer threw back the bolt on the old, rusty prison door.
  3. Buildingthe part of a lock drawn back by the action of the key.
  4. a sudden dash, flight, or escape:The mouse made a quick bolt to get away.
  5. Textilesa length of fabric, woven goods, etc., esp. as it comes on a roll from the loom.
  6. Military(on a rifle) a sliding bar that pushes a cartridge into the firing chamber.
  7. a thunderbolt:Jupiter hurling his bolts to earth.

  1. Building to fasten with or as if with a bolt:[+ object]He bolted the muffler back onto the car.
  2. to make a sudden run or escape:[no object]He bolted from the room.
  3. 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.
  4. 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.
  1. 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.
  2. Idioms bolt upright, stiffly or rigidly straight: He sat bolt upright when the teacher caught him napping.

WordReference Random House Unabridged Dictionary of American English © 2020
bolt1  (bōlt),USA pronunciation n. 
  1. a movable bar or rod that when slid into a socket fastens a door, gate, etc.
  2. the part of a lock that is shot from and drawn back into the case, as by the action of the key.
  3. any of several types of strong fastening rods, pins, or screws, usually threaded to receive a nut.
  4. a sudden dash, run, flight, or escape.
  5. Governmenta sudden desertion from a meeting, political party, social movement, etc.
  6. Textilesa length of woven goods, esp. as it comes on a roll from the loom.
  7. a roll of wallpaper.
  8. Printing[Bookbinding.]the three edges of a folded sheet that must be cut so that the leaves can be opened.
  9. Militarya rod, bar, or plate that closes the breech of a breechloading rifle, esp. a sliding rod or bar that shoves a cartridge into the firing chamber as it closes the breech.
  10. a jet of water, molten glass, etc.
  11. an arrow, esp. a short, heavy one for a crossbow.
  12. a shaft of lightning;
  13. a length of timber to be cut into smaller pieces.
  14. a slice from a log, as a short, round piece of wood used for a chopping block.
  15. Idiomsbolt from the blue, a sudden and entirely unforeseen event:His decision to leave college was a bolt from the blue for his parents.Also,  bolt out of the blue. 
  16. shoot one's bolt, [Informal.]to make an exhaustive effort or expenditure:The lawyer shot his bolt the first day of the trial and had little to say thereafter.

  1. to fasten with or as with a bolt.
  2. Governmentto discontinue support of or participation in;
    break with:to bolt a political party.
  3. to shoot or discharge (a missile), as from a crossbow or catapult.
  4. to utter hastily;
    say impulsively;
    blurt out.
  5. to swallow (one's food or drink) hurriedly:She bolted her breakfast and ran to school.
  6. to make (cloth, wallpaper, etc.) into bolts.
  7. Sport[Fox Hunting.](of hounds) to force (a fox) into the open.

  1. to make a sudden, swift dash, run, flight, or escape;
    spring away suddenly:The rabbit bolted into its burrow.
  2. Governmentto break away, as from one's political party.
  3. to eat hurriedly or without chewing.
  4. [Hort.]to produce flowers or seeds prematurely.

  1. [Archaic.]with sudden meeting or collision;
  2. Idiomsbolt upright, stiffly upright;
    rigidly straight:The explosive sound caused him to sit bolt upright in his chair.
bolter, n. 
boltless, adj. 
boltlike′, adj. 
  • Middle English (noun, nominal, verb, verbal, and adverb, adverbial), Old English (noun, nominal), cognate with Dutch bout, German Bolz bef. 1000
    • 24.See corresponding entry in Unabridged dash, rush, run, fly, speed, scoot, flee, bound.

bolt2  (bōlt),USA pronunciation v.t. 
  1. to sift through a cloth or sieve.
  2. to examine or search into, as if by sifting.
bolter, n. 
  • Gmc; compare Middle High German biuteln to sift, derivative of biutel, Old High German būtil bag, whence German Beutel
  • Old French bul(e)ter, metathetic variant of *buteler
  • Middle English bulten 1150–1200

Collins Concise English Dictionary © HarperCollins Publishers::
bolt /bəʊlt/ n
  1. a bar that can be slid into a socket to lock a door, gate, etc
  2. a bar or rod that forms part of a locking mechanism and is moved by a key or a knob
  3. a metal rod or pin that has a head at one end and a screw thread at the other to take a nut
  4. a sliding bar in a breech-loading firearm that ejects the empty cartridge, replaces it with a new one, and closes the breech
  5. a flash of lightning
  6. a sudden start or movement, esp in order to escape
  7. a roll of something, such as cloth, wallpaper, etc
  8. an arrow, esp for a crossbow
  9. a bolt from the bluea sudden, unexpected, and usually unwelcome event
  10. shoot one's boltto exhaust one's effort
  1. (transitive) to secure or lock with or as with a bolt or bolts: bolt your doors
  2. (transitive) to eat hurriedly: don't bolt your food
  3. (intr; usually followed by from or out) to move or jump suddenly: he bolted from the chair
  4. (intransitive) (esp of a horse) to start hurriedly and run away without warning
  5. (transitive) to roll or make (cloth, wallpaper, etc) into bolts
  6. (intransitive) (of cultivated plants) to produce flowers and seeds prematurely
  1. stiffly, firmly, or rigidly (archaic except in the phrase bolt upright)
Etymology: Old English bolt arrow; related to Old High German bolz bolt for a crossbow
bolt, boult /bəʊlt/ vb (transitive)
  1. to pass (flour, a powder, etc) through a sieve
  2. to examine and separate
Etymology: 13th Century: from Old French bulter, probably of Germanic origin; compare Old High German būtil bag

ˈbolter, ˈboulter n
'Bolt' also found in these entries:

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