aliasadv.[L., fr. alius. See Else.] (Law) Otherwise; otherwise called; -- a term used in legal proceedings to connect the different names of any one who has gone by two or more, and whose true name is for any cause doubtful; as, Smith, alias Simpson.()n.[L., otherwise, at another time.] (Law) A second or further writ which is issued after a first writ has expired without effect.()