key

1. A metal (or other hard, moldable substance, e.g. plastic, carbon, cheese) device that opens or closes a lock 2. 1 Kilogram (2.2 lbs, 35.27 oz) of narcotics 3. A clue that triggers understanding of something previously a mystery/unknown 4. A tone characteristic of an event 5. A sequence of characters entered on computer that unlocks a software program allowing access to the program's features to those who've legally or illegally obtained said rights for the aforementioned software. See Piracy 6. to use a key to scratch a vehicle's paint job in order to show approbation for the owner of said car, car owners in general, or just to piss off the Man 7. LuLu Lemon-wearers' term for 'cool'. 8. Passport of entry or symbol of welcome obtained by proving ones superiority