bolt

Definitions

• A (usually) metal fastener consisting of a cylindrical body that is threaded, with a larger head on one end. It can be inserted into an unthreaded hole up to the head, with a nut then threaded on the other end; a heavy machine screw.
• A sliding pin or bar in a lock or latch mechanism.
• A bar of wood or metal dropped in horizontal hooks on a door and adjoining wall or between the two sides of a double door, to prevent the door(s) from being forced open.
• (military) A sliding mechanism to chamber and unchamber a cartridge in a firearm.
• A small personal-armour-piercing missile for short-range use, or (in common usage though deprecated by experts) a short arrow, intended to be shot from a crossbow or a catapult.
• A lightning spark, i.e., a lightning bolt.
• A sudden event, action or emotion.
• A large roll of fabric or similar material, as a bolt of cloth.
• A sudden spring or start; a sudden leap aside.
• A sudden flight, as to escape creditors.
• (US) A refusal to support a nomination made by the party with which one has been connected; a breaking away from one's party.
• An iron to fasten the legs of a prisoner; a shackle; a fetter.
• A burst of speed or efficiency.