An object used to release a lock, commonly in groups. Suspected to be sentient life due to continued loss thereof on random (and often important) occasions.
"Damn, I lost my keys again."
"Did you check your pants?"
"Fuckingkeys."
something that almost every song has that is nearly impossible to define, yet if a musician knows the chords to the song he should be able to figure it out.
Key is a word used, when something that has been done or an item has been recieved that makes the current situation work. without a key you dont have access.
see also: "clutch"