Definition of "Laocoön"

(Greek mythology) A Trojan priest of Poseidon (or Apollo, depending on the author), whose rules he had defied (or whom he had otherwise offended), who tried to warn his fellow citizens against the Trojan horse. He was killed for this, along with his two sons, by giant snakes sent by Minerva (or Poseidon, or Apollo).

(Greek mythology) An Argonaut, son of Porthaon.