bolt

/boult/
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bolt

He sat bolt upright in his chair.

Definition

  1. Noun:

    • A fastener consisting of a threaded pin or rod with a head, designed to be used with a nut: A metal rod with a head at one end and a screw thread at the other, used to fasten objects together.
    • A sliding bar or rod used to fasten a door, gate, etc.: A metal bar that slides into a socket to lock a door or window.
    • A short, heavy arrow shot from a crossbow: A type of projectile.
    • A sudden, swift movement or dash: A rapid, often unexpected, movement to escape or advance.
    • A roll of cloth or wallpaper: A definite length of fabric or paper wound into a cylindrical shape.
    • A flash of lightning; a thunderbolt: A discharge of lightning, often accompanied by thunder.

  2. Verb:

    • To secure or fasten with a bolt: To lock or close using a sliding bar or threaded fastener.
    • To run away suddenly; to flee: To escape or depart hastily and often secretly.
    • To eat (food) hurriedly and without proper chewing: To swallow food quickly.
    • To move or spring suddenly: To make a sudden, rapid movement.
    • (Of a plant) To grow quickly and produce flowers or seeds prematurely: To develop seed stalks prematurely.

  3. Adverb:

    • In a rigidly stiff or upright manner: Directly and without bending.
    • Directly; straight: Used for emphasis.
Usage Examples

  • Noun:

    • He tightened the bolt with a wrench.
    • She slid the bolt across to lock the gate.
    • The horse made a bolt for the open field.
    • We need a bolt of canvas for the project.

  • Verb:

    • Remember to bolt the door before you go to bed.
    • The suspect bolted from the police station.
    • Don't bolt your dinner; you'll get indigestion.
    • He bolted upright when he heard the noise.

  • Adverb:

    • She sat bolt upright in her chair.
    • The path led bolt to the river.
Advanced Usage

  • "bolt from/out of the blue": A complete surprise; something totally unexpected.

    • His resignation came as a bolt from the blue.

  • "bolt upright": Sitting or standing very straight and stiffly.

    • The loud crash made him sit bolt upright in bed.

  • "make a bolt for it": To try to escape by running suddenly.

    • When the guard looked away, the prisoner made a bolt for it.

  • "shoot one's bolt": To make one's maximum effort, after which one has nothing left.

    • He shot his bolt in the first half of the game and was exhausted later.
Variants and Related Words

  • Bolted (adj): Fastened with a bolt.

    • The bolted door could not be opened.

  • Bolt-hole (n): A place where one can escape and hide.

    • The cabin was his secret bolt-hole.

  • Bolter (n): A person or animal that runs away; a horse that suddenly runs off.

    • The horse was known as a bolter.

  • Thunderbolt (n): A flash of lightning with a simultaneous crash of thunder; a sudden and unexpected event.

    • The news hit her like a thunderbolt.
Synonyms
  • Noun (fastener): Pin, rod, screw.
  • Verb (flee): Flee, dash, escape, run off, abscond.
  • Verb (eat quickly): Gobble, gulp, wolf down.
  • Adverb (straight): Directly, rigidly, stiffly.
Related Phrasal Verbs

  • Bolt down:

    • To fasten something securely with bolts.
      • They bolted down the machinery to the floor.
    • To eat food very quickly.
      • He bolted down his lunch and went back to work.

  • Bolt on: To add or attach something as an extra part.

    • The new module can be bolted on to the existing system.
Related Idioms

  • A fool's bolt is soon shot: An inexperienced person quickly uses up their resources or makes their best effort early on.

    • He spent all his money in the first week of his trip—a fool's bolt is soon shot.

  • Like a bolt of lightning: Extremely fast or sudden.

    • The idea struck her like a bolt of lightning.
bolt

He sat bolt upright in his chair.

Adverb
  1. directly
    • he ran bang into the pole
    • ran slap into her
  2. in a rigid manner
    • the body was rigidly erect
    • he sat bolt upright
Noun
  1. a sudden abandonment (as from a political party)
  2. a screw that screws into a nut to form a fastener
  3. a roll of cloth or wallpaper of a definite length
  4. the act of moving with great haste
    • he made a dash for the door
  5. the part of a lock that is engaged or withdrawn with a key
  6. a sliding bar in a breech-loading firearm that ejects an empty cartridge and replaces it and closes the breech
  7. a discharge of lightning accompanied by thunder
Verb
  1. make or roll into bolts
    • bolt fabric
  2. eat hastily without proper chewing
    • Don't bolt your food!
  3. leave suddenly and as if in a hurry
    • The listeners bolted when he discussed his strange ideas
    • When she started to tell silly stories, I ran out
  4. run away; usually includes taking something or somebody along
    • The thief made off with our silver
    • the accountant absconded with the cash from the safe
  5. swallow hastily
  6. secure or lock with a bolt
    • bolt the door
  7. move or jump suddenly
    • She bolted from her seat

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