腸

It refers broadly to the digestive tract inside the body and is used in medical and anatomical contexts.

A phono-semantic compound:

肉 (육, “meat, flesh”) – indicates the meaning (a body part or organ);

昜 (양, “sunlight”) – provides the sound.

It is the standard hanja for 창자 (bowels) and appears in compounds like 소장 (小腸, small intestine) and 대장 (大腸, large intestine).