词典释义：
a clear, high-pitched sound made by forcing breath through a small hole between partly closed lips, or between one's teeth
口哨声。
a similar sound, especially one made by a bird, machine, or the wind
（鸟的）啭鸣声；（机器、风等发出的）啸叫声。
an instrument used to produce such a sound, especially for giving a signal
口哨，哨子。
〈英〉 一套衣服；一手同花色牌。[ORIGIN: from rhyming slang <Italic>whistle and flute.</Italic>]
[no obj.]emit a clear, high-pitched sound by forcing breath through a small hole between one's lips or teeth
吹口哨
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the audience cheered and whistled .观众们又欢呼又吹口哨。
express surprise, admiration, or derision by making such a sound
吹口哨（表示惊讶、羡慕、嘲弄等）
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Bob whistled .‘You look beautiful!’ he said .鲍勃吹了声口哨，然后说道：“你真美！”。
[with obj.]produce (a tune) in such a way
用口哨吹出（曲调）。
(especially of a bird or machine)produce a similar sound
（鸟） 啭鸣；（机器等）发啸叫声
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the kettle began to whistle .水壶开始发出鸣啸声。
[no obj., with adverbial]produce such a sound by moving rapidly through the air or a narrow opening
呼啸而行
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the wind was whistling down the chimney .风呼呼地从烟囱灌进来。
blow an instrument that makes such a sound, especially as a signal
吹哨示意
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the referee did not whistle for a foul .裁判没有吹哨判犯规。
[with obj.](
吹口哨唤起（或示意）。
(
得不到，空指望，徒然希望
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you can go home and whistle for your wages .你可以回家了，别指望拿到工钱。
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blow the whistle on informal bring an illicit activity to an end by informing on the person responsible 〈非 正式〉 通过告发当事人终止不合法活动 -
（
as ）clean as a whistle extremely clean or clear 洁净；清清楚楚 -
informal free of incriminating evidence 〈非正式〉 没留下犯罪证据the cops raided the warehouse but the place was clean as a whistle ． 警察搜查了那个仓库，但那个地方没有留下任何犯罪线索 -
whistle something down the wind let something go； abandon something 放走，听其自由；放弃 -
archaic turn a trained hawk loose by casting it off with the wind 〈古〉 放飞（训练过的鹰） -
whistle in the dark pretend to be unafraid 借吹口哨壮胆；故作镇定 -
whistle in the wind try unsuccessfully to influence something that cannot be changed 徒然无功
"Old English （
