yearling
nounAn animal that is one year old or has not completed its second year.
nounA racehorse that is one year old, dating from January 1 of the year in which it was foaled in the Northern Hemisphere, and from July 1 or August 1 in the Southern Hemisphere.
nounA young beast one year old or in the second year of its age.
nounUnder racing and trotting rules, a horse one year old, dating from January 1st of the year of foaling.
A year old; of a year’s age, duration, or date: as, a yearling heifer.
nounAn animal one year old, or in the second year of its age; — applied chiefly to cattle, sheep, and horses.
adjectiveBeing a year old.
nounAn
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a young child