Used as a answer to a question. This response is mostly used in Marine Corps and Army combat arms units. Variations include adding a noun of your choice at the end.
Friend: You heard first Sergeant is releasing us early?
You: hell yeah, kill
Friend: Hey fuckhead make sure you're tracking formation at 1900!
You: Kill Sluts!
When you secure a shag from an 8+, No 7's round here boys!
Mumford got a kill last night, She was a 9.3.
for someone to help someone else
hey i just killed bob!
hooray hes alive!
an act of demolishing or incapacitating an enemy aircraft, submarine, tank, etc.
"the engagement resulted in fifty-one tank kills"
(in tennis and similar games) hit (the ball) so forcefully that it cannot be returned.
"In the final set, the player's powerful "kills" left their opponent unable to respond, effectively ending the match."
delete (a line, paragraph, or file) from a document or computer.
"The author decided to kill the paragraph about the character's backstory as it no longer fit in with the rest of the story."