Nouns

(n)knifeedge tool used as a cutting instrument; has a pointed blade with a sharp edge and a handle
(n)knifea weapon with a handle and blade with a sharp point
(n)tongue, knifeany long thin projection that is transient“tongues of flame licked at the walls”, “rifles exploded quick knives of fire into the dark”

Verbs

(v)knife, stabuse a knife on“The victim was knifed to death”