Meaning of “knife” - Learner’s Dictionary

knife

noun [ C ] us uk /naɪf/ plural knives
Extra Examples
a sharp knifea blunt knifeI cut myself on a knife.The victim was stabbed repeatedly with a knife.He plunged the knife into the man's stomach.

A1 a sharp tool or weapon for cutting, usually with a metal blade and a handle:

a knife and fork

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