bullet
/ˈbʊlɪt/noun
1
- a projectile for firing from a rifle, revolver, or other small firearm, typically made of metal, cylindrical and pointed, and sometimes containing an explosive子弹。
1.1
- used in similes to refer to someone or something that moves very fast飞速移动的人（或物）：
the ball sped across the grass like a bullet.
球飞快穿过草地。
1.2
- US (in sporting contexts) a very fast ball〈美〉（运动中）高速球。
1.3
the bullet
informal dismissal from employment〈非正式〉解雇, 炒鱿鱼：your record's bad, but it's doubtful they'll give you the bullet.
虽然你有不良记录, 但我还是不信他们会炒你鱿鱼。
2
- Printing a small solid circle printed before each in a list of items, for emphasis【印刷】（标示用的）黑圆点。
词源
early 16th cent. (denoting a cannonball)： from French boulet， boulette 'small ball'， diminutive of boule, from Latin bulla 'bubble'.