(Ἀλαλκομενηΐς), a surname of Athena, derived from the hero Alalcomenes, or from the Boeotian village of Alalcomenae, where she was believed to have been born. Others derive the name from the verb ἀλάλκειν, so that it would signify the " powerful defender." (Hom. Il. 4.8; Steph. Byz. s. v. Ἀλαλκομένιον ; Müller, Orchom. p. 213.)
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890