noun

• (military, mechanical engineering) A sliding mechanism to chamber and unchamber a cartridge in a firearm.
• A large roll of fabric or similar material, as a bolt of cloth.
• (US, politics) A refusal to support a nomination made by the party with which one has been connected; a breaking away from one's party.

verb

• (transitive) To connect or assemble pieces using a bolt.
  "Bolt the vice to the bench."
• (transitive, figurative) To affix in a crude or unnatural manner.
  "Most languages are *not* based on C++. C++ is a complicated mess. It's C with object oriented features bolted on as an afterthought and no-one in their right mind would want to base another language on it."
• (transitive) To secure a door by locking or barring it.
  "Bolt the door."
• (intransitive) To flee, to depart, to accelerate away suddenly.
  "Seeing the snake, the horse bolted."

verb

• (law) To discuss or argue privately, and for practice, as cases at law.
  "[…]the old habits of mooting or bolting caſes (i.e. of public disputations), might make the ſtudent more ſubtle and acute"