口笛 kǒudí whistle Origin Definitions Defs Strokes Stroke Words Sentences Sents kǒudí whistle 口 kǒu noun mouth mouth of a person or animal; (bound form) oral笛 dí nounverb whistle (bound form) a sharp-sounding device or alarm such as a whistle or sirenkǒudí koudi 口 kǒu noun mouth mouth of a person or animal; (bound form) oral笛 dí nounverb flute a bamboo flute; generic term for various transverse flutes made of bamboo