bolt

(redirected from bolt upright)
Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Idioms, Wikipedia.
Related to bolt upright: at least, fall through, touch base

bolt

1. an arrow, esp for a crossbow
2. Mechanical engineering short for expansion bolt

Bolt

Robert (Oxton). 1924--95, British playwright. His plays include A Man for All Seasons (1960) and he also wrote a number of screenplays

Bolt

A rod or pin, with a permanent head on one end, that holds parts of a building or structure together.

bolt

[bōlt]
(design engineering)
A rod, usually of metal, with a square, round, or hexagonal head at one end and a screw thread on the other, used to fasten objects together.
(forestry)
A short section of tree trunk.
(materials)
In veneer production, a short log of a length suitable for peeling on a lathe.
(mining engineering)
(ordnance)
The sliding part in a breechloading weapon that pushes a cartridge into position and holds it there as the gun is fired.
(textiles)
The entire length of cloth from a loom.

bolt

bolts, 1
1. A metallic pin or rod having a head at one end and an external thread on the other for screwing up a nut; used for holding members or parts of members together.
2. A short section cut from a tree trunk.
3. A short log from which veneer is peeled.
References in periodicals archive ?
She was sitting there bolt upright with her hands in her lap and her face was dead straight, but her eyes looked like they were filling up," he added.
Due to the sub-zero temperatures outside, I'd piled on two dressing gowns, big socks and was sat bolt upright in bed.
My whole body went cold and I sat bolt upright and said, very firmly, 'Go away and leave me alone
And so you find yourself bolt upright, high above the traffic, with this super-lightweight machine underneath you that's incredibly agile.
I found myself having to sit bolt upright in front of the screen - and I have good eyesight
The steering is very sharp, the brakes are superb and the low-slung driving position and bolt upright steering wheel add to the sense of occasion.
Within moments of the Injection, Mrs Lelghton jerked forward and sat bolt upright In her bed.
Spiral heard me shout, then I was bolt upright and a voice said, 'Do not sleep in that bed.
All sit bolt upright as one and slowly crank extended legs around like a vane in a breeze.
No, I'm going to sit bolt upright gasping at the terrifying realisation that I've FORGOTTEN TO HAVE A BABY
Bursting into the lounge, our friend was sitting bolt upright on the sofa bed, amazed that I couldn't see the "sabre-toothed tiger licking his ears.
Bolt upright, blinking and swallowing frequently, the Culture Secretary seemed to have few illusions about what was at stake.