Meaning of “bullet” - Learner’s Dictionary

bullet

noun [ C ] us uk /ˈbʊlɪt/
a bullet holeA volley of bullets ripped through the floorboards.A bullet grazed his cheek.The bullet ricocheted off the wall.The bullet had lodged near his heart.

B2 a small, metal object that is fired from a gun:

a bullet wound

(Definition of “bullet” from the Cambridge Learner’s Dictionary © Cambridge University Press)