constrictor muscle; retractor muscle
Anatomical term for a muscle that constricts or retracts a body part. Used in medical and biological contexts.
The pharyngeal constrictor muscles play an important role in swallowing.
In anatomy class, we learned about the function of constrictor muscles.
Compound of 収縮 (shūshuku, 'contraction') and 筋 (kin, 'muscle'). The derivation is straightforward from the kanji meanings.