kicker

Concise Oxford English Dictionary © 2008 Oxford University Press:
kicker/ˈkɪkə(r)/

▶noun

• 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.