Definitions from Wiktionary (alias)

▸ adverb:  Otherwise; at another time; in other circumstances; otherwise called; also known as; formerly known as.
▸ adverb:  (law) 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
▸ noun:  Another name; especially, an assumed name.
▸ noun:  (law) A second or further writ which is issued after a first writ has expired without effect.
▸ noun:  (computing) An abbreviation that replaces a string of commands and thereby reduces typing when performing routine actions or tasks.
▸ noun:  (signal processing) An spurious signal generated as a technological artifact.
▸ verb:  (computing) To assign an additional name to an entity, often a more user-friendly one.
▸ verb:  (signal processing, of two signals, ambitransitive) To make or become indistinguishable.

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