当とう歳さい駒ごま

noun

yearling; one-year-old colt

Specifically refers to a horse that is one year old, often used in equestrian or breeding contexts.

• 当とう歳さい駒ごまの競せり市いちが開ひらかれた。

  An auction for yearlings was held.

• 牧ぼく場じょうで当とう歳さい駒ごまが元げん気きに走はしり回まわっている。

  Yearlings are running around energetically at the ranch.