English▸ noun an animal (especially a sheep, calf, or foal) that is a year old or that is in its second year.
▪ a racehorse in the calendar year after its year of foaling.
▸ adjective [attributive] having lived or existed for a year; a year old:
a yearling calf.
▪ relating to something that is a year old:
the yearling market.