Priest who warned against the Trojan horse

• A god who favored the Greeks (Poseidon or Athena) sent snakes who coiled around Laocoon and his two twin sons killing them
• Priest who warned the Trojans not to accept the wooden horse
• (Greek mythology) the priest of Apollo who warned the Trojans to beware of Greeks bearing gifts when they wanted to accept the Trojan Horse

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
Trojan priest of Apollo, from Latin Laocoon , from Greek Laukoun , from laos "people" (see lay (adj.)) + koeo "I mark, perceive."\n\n Laocoön , n . A famous piece of antique sculpture representing a priest of that time and his two sons in the folds of two ...

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Laocoon \La*oc"o*["o]n\, n. [L., fr. Gr. ? ] (Class. Myth.) A priest of Apollo, during the Trojan war. (See ) 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 ...

Wikipedia Word definitions in Wikipedia
The Laocoön is an oil painting created between 1610 and 1614 by renowned Greek artist and Spanish Renaissance master Doménikos Theotokópoulos, known as El Greco ("The Greek"). It is part of a collection at the National Gallery of Art in Washington, D.C. ...