I. ˈyi(ə)rliŋ, ˈyiəl-, ˈyərl-, ˈyə̄l-, -lēŋ, -lə̇n noun
( -s )
Etymology: Middle English yerling, from yere year + -ling
1.
a. : one (as a child or plant) that is a year old ; especially : an animal one year old or in the second year of its age — used chiefly of livestock
b. : a racehorse between January 1st of the year after the year in which it was foaled and the next January 1st ranging in actual age from nearly newborn to nearly two years of age
2. : a member of the next to the lowest class in a military academy (as West Point)
II. adjective
: a year old : having passed a first anniversary but not a second