What is the meaning of knife?

noun

• Edge tool used as a cutting instrument; has a pointed blade with a sharp edge and a handle.
• A weapon with a handle and blade with a sharp point.
• Any long thin projection that is transient.
  • usage: "tongues of flame licked at the walls"; "rifles exploded quick knives of fire into the dark"
  • synonyms: tongue

verb

• Use a knife on.
  • usage: "The victim was knifed to death"
  • synonyms: stab