chōu​jīn

to have a cramp

抽筋 chōu//jīn
to have a cramp verb + noun
To experience muscle spasms or a charley horse.

My hand's starting to cramp up.

to remove tendons
To remove or pull out tendons, either as a method of food preparation or as an ancient form of corporal punishment.
jerkiness
A state of jerky or erratic movement; twitching; (metaphorical) acting crazy or erratic.

Frequency

Movie subtitles
4.26 per million appears in 2% of films
Written text
4.61 per million

Sources