the head of a human or animal; hair or hairstyle

(literary) to study with great diligence; refers to the idiom 头悬梁，锥刺股 tóu​xuán​liáng​zhuī​cì​gǔ where one ties their hair to a beam to prevent falling asleep

To drill or pierce with an awl or sharp instrument.

to be extremely hardworking in one's studies; derived from the story of Su Qin who stabbed his thigh with an awl to stay awake while studying

the head of a human or animal; hair or hairstyle

(literary) to study with great diligence; refers to the idiom 头悬梁，锥刺股 tóu​xuán​liáng​zhuī​cì​gǔ where one ties their hair to a beam to prevent falling asleep

A sharp-pointed tool for boring holes; a bradawl

to be extremely hardworking in one's studies; derived from the story of Su Qin who stabbed his thigh with an awl to stay awake while studying