bolt

1 bolt /ˈboʊlt/ noun
plural bolts
1 bolt
/ˈboʊlt/
noun
plural bolts
Britannica Dictionary definition of BOLT
1 
[count] : a bright line of light that appears in the sky during a storm : a flash of lightning — often used figuratively in the phrases a bolt from the blue and a bolt out of the blue
2 
[count]
a  : a sliding bar that is used to lock a door or window
b  : the part of a lock that is moved by a key — see also dead bolt
3 
[count] : a long, round piece of metal that has a wider part at one end and is like a screw at the other end
◊ A bolt and a nut are used together to hold something in place.
— see picture at carpentry; see also nuts and bolts at nut
4 
[singular] British : the act of running or moving quickly and suddenly in a particular direction or to a particular place
5 
[count] : a large roll of cloth
6 
[count] : a tube-shaped metal part inside a gun
7 
[count] : a short, heavy arrow that is shot from a type of weapon (called a crossbow) used mainly in the past
◊ If you have shot your bolt, you have done or used everything possible to try to do something, and there is nothing more that you can do.
2 bolt /ˈboʊlt/ verb
bolts; bolted; bolting
2 bolt
/ˈboʊlt/
verb
bolts; bolted; bolting
Britannica Dictionary definition of BOLT
1 
[no object]
a  always followed by an adverb, adjective, or preposition : to move or go very suddenly and quickly from or to a particular place, position, or condition
b  : to run away suddenly and quickly
2 
US : to suddenly leave a political party, team, etc.
[no object]
[+ object]
3 
a  : to fasten (something) tightly : to lock (something) with a bolt
[+ object]
[no object]
b  [+ object] : to attach (something) firmly : to attach (something) with a bolt
4 
[+ object] : to eat (food) quickly — often + down
3 bolt /ˈboʊlt/ adverb
3 bolt
/ˈboʊlt/
adverb
Britannica Dictionary definition of BOLT
: with the back in a very straight position