cockshy
/ˈkɒkʃaɪ/noun
(pl. -ies)
1- Brit. dated a target for throwing sticks or stones at as a game〈英,旧〉（投靶游戏中的）靶子。
1.1
- an act of throwing something at such a target向靶子投掷。
1.2
- figurative an object of ridicule or criticism〈喻〉嘲笑（或批评）的对象。
词源
from the original use of a replica of a cockerel as a target.