noun
/ˈnaɪf/ , pl knives /ˈnaɪvz/
[count] :a usually sharp blade attached to a handle that is used for cutting or as a weapon
like a (hot) knife through butter
informal :very quickly and easily
the knives are out (for someone)
used to say that people are ready to blame or punish someone for something often in a way that is unfair
twist/turn the knife (in the wound)
informal :to say or do things that cause more pain to someone who is already suffering
under the knife
informal :having a medical operation
verb
knifes; knifed; knifing
[+ obj] :to injure (someone) with a knife
[no obj] :to move easily and quickly like a knife cutting through something