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bolt

bolt

102 3.8
A metal pin with a head that holds two parts together with a nut
  • noun
  • /boʊlt/
  • Specialized
: perno
  • Make sure to tighten the bolt before you use the machine.
  • nuts and bolts
  • flange bolt
  • head of the bolt

He recently watched the giant nut and bolt built over COVID.

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Examples

  • He used a bolt to secure the two wooden pieces together.

  • The first person to test these single bolt screws that are holding these things to the wall.

  • Get one more bolt on that flange and it's ready for Christmas.

  • I thought you might need some of your bolts replacing.

  • And you immediately know which nut pairs with which bolts and the other one as well.

  • Also this hole was a bit looser and none of the bolts for these pumps were tight anymore.

  • We were just doing some routine repair work, adjusting some bolts--

  • The various lots of bolts were combined with the nut lots and evaluated for torque-tension performance.

    Academic text (1996)
  • Also, he's got some stainless steel bolts, washers and nuts as well.

  • The mechanic replaced the old bolt with a new one to fix the engine.

Synonyms

fastener
vsbolt
7 3.2

A thing that holds two parts together, like a button or zipper

is the specific metal pin fastened with a nut rather than any attachment device
carriage bolt
vsbolt
  • Specialized
1 6.7

A metal rod with a round head and partial threads used to join wood through a hole

is the general metal pin fastened with a nut rather than this rounded head form
eyebolt
vsbolt
  • Specialized
1 5.0

A metal bolt with a looped head used to attach a rope or cable

is the general metal pin fastened with a nut rather than this looped attachment
toggle bolt
vsbolt
  • Specialized
1 6.9

A metal screw with a spring part that opens inside a hollow wall to hold heavy items

is the general metal pin fastened with a nut rather than this wall anchor
lag bolt
vsbolt
  • US
1 6.7

A heavy screw with a large head that joins wood pieces when you turn it with a wrench

is the general metal pin fastened with a nut not a driven screw
stove bolt
vsbolt
  • Specialized
1 6.8

A small metal piece with a round or flat head that holds metal parts together

is the general metal pin fastened with a nut rather than this small size
safety bolt
vsbolt
1 4.5

A metal bar on a door that you lock from inside to stop people entering

is the general metal pin fastened with a nut rather than this security function
machine bolt
vsbolt
  • Specialized
1 4.1

A metal rod with a square or six-sided head and threads that you turn with a wrench

is the general metal pin fastened with a nut rather than this specific head
expansion bolt
vsbolt
  • Specialized
1 5.3

A metal part that spreads inside a hole to hold heavy things to concrete or brick

is the general metal pin fastened with a nut rather than this expanding anchor

Idioms

3 6.5

A sudden event that shocks people and is not expected

1 6.3

Very suddenly and without warning

To feel sudden shock or surprise

To run away quickly, usually because you are afraid

1 8.6

To use up all your energy or chances so none remain

8.8

To use up all your energy or chances

Compounds

15 3.9

A strong tool with long handles and heavy jaws for cutting metal, like locks or chains

A sudden bright flash in the sky during a storm that often comes before thunder

5 2.0

Two metal pieces, a bolt and a matching nut, that hold parts together by screwing

carriage bolt
  • Specialized
1 6.7

A metal rod with a round head and partial threads used to join wood through a hole

toggle bolt
  • Specialized
1 6.9

A metal screw with a spring part that opens inside a hollow wall to hold heavy items

1 8.6

A hole an animal runs into to hide from danger

1 6.7

A heavy screw with a large head that joins wood pieces when you turn it with a wrench

1 4.2

A metal bar you slide to lock and unlock a door or gate

1 9.9

A large ancient weapon that shoots heavy arrows or stones during war

stove bolt
  • Specialized
1 6.8

A small metal piece with a round or flat head that holds metal parts together

1 4.8

An extra product you add to an existing system to give it new features

1 4.5

A metal bar on a door that you lock from inside to stop people entering

machine bolt
  • Specialized
1 4.1

A metal rod with a square or six-sided head and threads that you turn with a wrench

expansion bolt
  • Specialized
1 5.3

A metal part that spreads inside a hole to hold heavy things to concrete or brick

1 5.1

A metal bar you move to lock a door or gate

6.3

An extra feature you add to a product or system to make it work better

How Strong

bolt
  • Specialized
102 3.8
screw
79 1.2
nail
208 1.0
pin
284 1.0

Surface Forms

bolt singular
bolts plural

Etymology

A bolt that holds parts together is like a short metal rod or bar that passes through holes and is fastened with a nut. The name reminds you it is a metal rod used to join and hold pieces tightly.