yearlingPronunciation: /ˈjɪəlɪŋ, ˈjəː-/Definition of yearling 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] 1having lived for a year; a year old:a yearling calf relating to an animal that is a year old:the yearling market 2 Finance denoting a bond issued by a local authority and redeemable after one year. yearling in other Oxford dictionaries Definition of yearling in the US English dictionary