qiào

hole

Phonosemantic compound. represents the meaning and represents the sound.

Components
穴 meaning component

  Meaning component

xué

  

cave

敫 sound component

  Sound component

jiǎo

  

shining light

Evolution

竅 Seal script Shuowen (~100 AD)

Seal script

Shuowen (~100 AD)
竅 Clerical script Western Han dynasty (202 BC-9 AD)

Clerical script

Western Han dynasty (202 BC-9 AD)
竅 Regular script Modern

Regular script

Modern
Definitions

() 

qiào

hole, opening, aperture; hole; opening; orifice (of the human body); (fig.) key (to the solution of a problem)

Most common words with 竅
Freq.
Word
Meaning

hole

诀窍

secret

窍门

a trick

一窍不通

it's all Greek to me

开窍

to get it straight