a (legal)(non-gloss definition|Used to connect the different names of a person who has gone by two or more, and whose true name is for any cause doubtful; as, Smith, 'alias' Simpson.)
n (legal) A second or further writ which is issued after a first writ has expired without effect.
n (context|online gaming) An abbreviation that replaces a string of in-game commands and thereby reduces typing when performing routine actions or tasks.
n (signal processing) An spurious signal generated as a technological artifact.
v (computing) To assign an additional name to an entity, often a more user-friendly one.