What is "bucolion"

In Greek mythology, Bucolion was the eldest, but illegitimate, son of the Trojan king Laomedon and the nymph Calybe. His wife was the naiad Abarbarea, and they had at least two sons, Aesepus and Pedasus. Aesepus and Pedasus participated in the Trojan War, and the family is mentioned in the Iliad, Book VI.