rotator cuff

rotator cuff

noun \-ˌkəf\

Definition of ROTATOR CUFF

: a supporting and strengthening structure of the shoulder joint that is made up of part of its capsule blended with tendons of the subscapularis, infraspinatus, supraspinatus, and teres minor muscles as they pass to the capsule or across it to insert on the humerus—called also musculotendinous cuff