colt
noun [ C ] uk/kəʊlt/ us/koʊlt/
（4岁以下的）小公马，雄马驹
a young male horse under the age of four
Compare: filly
coltish
adjective uk/ˈkəʊl.tɪʃ/ us/ˈkoʊl-/
（人）小马驹似的，活蹦乱跳的，活泼但有些局促的
A coltish person is young and energetic but awkward.
coltish limbs 有活力的四肢