Definitions

1. noun

a young animal, especially a sheep or a deer, in its first year of life

“The farmer raised a yearling sheep that would eventually be sold at the market.”

2. noun

a young person, especially a child, in their first year of life

“The new mother was exhausted taking care of her yearling baby.”

3. noun

a horse or other animal in its first year of training

“The trainer worked with a yearling colt, teaching it how to run and jump.”