Laocoon Syllabification: (La·oc·o·on)Pronunciation: /lāˈäkōˌän/ Greek MythologyDefinition of Laocoon a Trojan priest who, with his two sons, was crushed to death by two great sea serpents as a penalty for warning the Trojans against drawing the wooden horse of the Greeks into Troy. Laocoon in other Oxford dictionaries Definition of Laocoon in the British & World English dictionary