HSK7-9
shào
whistle
Phonosemantic compound. 口 represents the meaning and 肖 represents the sound.
口 Meaning component
kǒu
mouth
肖 Sound component
xiào, xiāo
look like
Seal script
Regular script
哨
whistle, blow whistle; chirp; a whistle; sentry
sentry
口哨
花哨
garish
哨兵
sentinel
哨子
Academia Sinica
Make Me a Hanzi
Unicode
Dong Chinese
CC-CEDICT
SUBTLEX-CH
MTSU Chinese text computing