nick
     n 1: an impression in a surface (as made by a blow) [syn: {dent},
           {gouge}]
     2: a small cut [syn: {notch}, {snick}]
     v 1: cut slightly, with a razor; "The barber's knife nicked his
          cheek" [syn: {snick}]
     2: cut a nick into [syn: {chip}]
     3: divide or reset the tail muscles of; "nick horses"
     4: mate successfully; of livestock
Source: WordNet® 2.0

nick n. [IRC; very common] Short for nickname. On {IRC}, every user
   must pick a nick, which is sometimes the same as the user's real name or
   login name, but is often more fanciful. Compare {handle}, {screen name}.


Source: The Jargon File