1a metal projectile for firing from a rifle, revolver, or other small firearm, typically cylindrical and pointed, and sometimes containing an explosive.
used in similes to refer to someone or something that moves very fast:the ball sped across the grass like a bullet
US (in sporting contexts) a very fast ball:all afternoon, he threw bullets at the other team’s batters
(the bullet) informal dismissal from employment:your record’s bad, but it’s doubtful they’ll give you the bullet
2 Printing a small symbol used to introduce each item in a list, for emphasis.