a bar that can be slid into a socket to lock a door, gate, etc

a bar or rod that forms part of a locking mechanism and is moved by a key or a knob

a metal rod or pin that has a head at one end and a screw thread at the other to take a nut

a sliding bar in a breech-loading firearm that ejects the empty cartridge, replaces it with a new one, and closes the breech

a flash of lightning

a sudden start or movement, esp in order to escape

a sudden desertion, esp from a political party

a roll of something, such as cloth, wallpaper, etc

an arrow, esp for a crossbow

a folded edge on a sheet of paper that is removed when cutting to size

to secure or lock with or as with a bolt or bolts

to eat hurriedly

to move or jump suddenly

(esp of a horse) to start hurriedly and run away without warning

to roll or make (cloth, wallpaper, etc) into bolts

to desert (a political party, etc)

(of cultivated plants) to produce flowers and seeds prematurely

to cause (a wild animal) to leave its lair; start

stiffly, firmly, or rigidly (archaic except in the phrase bolt upright)

to pass (flour, a powder, etc) through a sieve

to examine and separate

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

Usain (juːˈseɪn) (St Leo). born 1986, Jamaican athlete: gold medallist in the 100 metres and 200 metres at the 2008 Olympic Games; successfully defended both titles in 2012 and 2016