n.

1. 踢者；愛踢的馬
   She had a kicker for her first riding lesson.

   她第一次學騎馬就遇上了匹愛踢的馬。

2. 抱怨者；反對者
   Nobody likes to work with a kicker.

   誰也不喜歡與愛抱怨的人一起工作。

n.

1. a person or animal that kicks.
2. a player in a team who scores or gains positional advantage by kicking.
3. N. Amer. informal an unwelcome discovery or turn of events.
4. an extra clause in a contract.
5. informal a small outboard motor.
6. (in poker) a high third card retained in the hand with a pair at the draw.