squeaker
/ˈskwiːkə(r)/noun
1- a person or thing that squeaks发出短促刺耳声音的人（或物）：
children blowing party squeakers.
吹聚令游戏哨子的孩子们。
1.1
- informal, chiefly N. Amer. a competition or election won or likely to be won by a narrow margin〈非正式, 主北美〉（有望）以微弱优势赢得的比赛（或选举）。
1.2
- chiefly Brit. a young pigeon〈主英〉雏鸽。