1 arrow, dart, projectile, missile, Historical quarrel:
He had only three bolts remaining for the crossbow.
2 pin, bar, rod, catch; latch:
We hoped that the bolt would prevent their opening the door.
3 machine screw:
Bolts can be tightened or removed, unlike rivets.
4 roll, length:
We sell only full bolts of fabric.
5 lightning flash, thunderbolt, Formal fulguration:
One bolt travelled down the television aerial and blew out the set.
6 bolt from or out of the blue. surprise, shock, bombshell, bomb, blow, revelation, eye-opener, Colloq shocker:
The news of her resignation came like a bolt from the blue.
7 shoot one's bolt. exhaust or use up one's resources, Slang burn out, US poop out:
He was fast early in the marathon, but he'd shot his bolt long before the finishing line.
8 spring, dart, shoot off, take flight, run (away or off), rush (off or away), break away, flee, decamp, abscond, escape, fly, dash (off or away), Colloq skedaddle, scram, Brit scarper, do a bunk, do a moonlight flit, US take a (run-out) powder,:
The youths bolted as soon as they saw the police. The couple in room 315 bolted without paying their bill.
9 gulp (down), swallow whole:
When the bell rang, she bolted her breakfast and ran out of the back door.
10 fasten, lock, latch, secure:
Make sure you bolt your door at night and don't let anyone in.
11 fix, attach, fasten, connect, make fast to:
The motor must be securely bolted to the workbench.
12 bolt upright. erect, straight, rigidly, stiffly:
When her name was called, Penny sat bolt upright in her chair.