n.

1. 口哨；警笛；汽笛；哨子[C]
   The referee blew his whistle, and the game stopped.

   裁判鸣笛，比赛停止。

2. 哨音；笛声[U][C]
3. （鸟）啭鸣声；（风）呼呼声[U][C]

vi.

1. 吹口哨；鸣笛；吹哨子
   The train whistled.

   火车鸣笛。

2. 啸叫；啭鸣；呼啸
   The nightingale whistled sweetly.

   夜莺啭鸣。

3. 吹口哨等示意
4. （风）呼啸吹过；（子弹）嗖嗖飞过[Q]
   Bullets whistled by.

   子弹嗖嗖飞过。

vt.

1. 用口哨吹出（曲调等）
   Jack whistled a popular tune.

   杰克用口哨吹了一段流行曲调。

2. 吹口哨召唤
   The boy whistled his dog back.

   男孩吹口哨把狗唤回。

3. 使发啸声行进

n.

1. a clear, high-pitched sound made by forcing breath through a small hole between partly closed lips, or between one's teeth.
   ▸any similar sound.
2. an instrument used to produce such a sound, especially for giving a signal.
3. Brit. informal a suit. [from rhyming sl. whistle and flute.]

v.

1. emit or produce a whistle.
   ▸produce (a tune) by whistling.
   ▸move rapidly through the air or a narrow opening with a whistling sound.
2. blow a whistle.
3. (whistle for) wish for or expect (something) in vain.