Definitions
1.NounA device or person that applies caps, as to bullets or bottles.
2.NounA person that makes or sells caps.
3.NounA finale; something that is conclusively better, or "caps it all off".
4.NounA by-bidder; a decoy for gamblers.
5.NounA person who records a television broadcast or video stream to their computer.
6.NounA person who caps i.e. is inclined to untruth, a fibber.