呜 (wū) — (onomatopoeia) sound of a horn, whistle, or siren

Definition

Onomatopoeia for the long, drawn-out sound of a horn, whistle, or siren (e.g. 汽笛呜的一声). Always written as a repeated 呜呜 in running text to stretch the sound.

onomatopoeia
sound of a hornwhistleor siren

Examples

  • “”。
    Jǐng chē fā chū "wū wū" de shēng yīn.
    The police car made a 'wooo wooo' sound.
  • 呜。
    Yuǎn chù chuán lái huǒ chē wū de yī shēng cháng míng.
    From afar came the long 'toot' of a train whistle.
  • “呜”。
    Qì chē lǎ ba "wū" dì xiǎng le yí xià.
    The car horn sounded with a 'toot'.

Origin

Sound + meaning
六书liùshū
形声xíngshēng

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

This origin belongs to the traditional form 嗚; 呜 is its simplified writing.

Meaning part形符xíngfú
口口kǒumouth
Sound part声符shēngfú
烏
烏wū嗚wū
Same sound today

The traditional form 嗚 pairs 口 (mouth) with 烏, which gives its sound; the simplified 呜 is a shorthand, and its right side is not a historical sound part.

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