\La*oc"o*["o]n\, n. [L., fr. Gr. ? ] 1. (Class. Myth.) A priest of Apollo, during the Trojan war. (See 2.) 2. (Sculp.) A marble group in the Vatican at Rome, representing the priest Laoco["o]n, with his sons, infolded in the coils of two serpents, as described by Virgil.