Entry 1 sense Webster, 1913 Gorgoneion /(gôr`gō̇*nē"yŏn)/ · Gor·go·ne·ion · IPA 01 n. A mask carved in imitation of a Gorgon's head. pl. Gorgoneia ((#)) 1. A mask carved in imitation of a Gorgon's head.(Arch.)