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.
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.
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.
A sieve, especially a long fine sieve used in milling for bolting flour and meal; a bolter.
To connect or assemble pieces using a bolt.
To secure a door by locking or barring it.
To flee, to depart, to accelerate suddenly.
To cause to start or spring forth; to dislodge (an animal being hunted).
To strike or fall suddenly like a bolt.
To escape.
Of a plant, to grow quickly; to go to seed.
To swallow food without chewing it.
To drink one's drink very quickly; to down a drink.
To refuse to support a nomination made by a party or caucus with which one has been connected; to break away from a party.
To utter precipitately; to blurt or throw out.
To sift, especially through a cloth.
To sift the bran and germ from wheat flour.
To separate, assort, refine, or purify by other means.
To discuss or argue privately, and for practice, as cases at law.
Suddenly; straight; unbendingly.