noun Download 🔗Share A large vertebrate skeletal muscle divided into an ascending, descending, and transverse portion, attaching the neck and central spine to the outer extremity of the scapula; it functions in scapular elevation, adduction, and depression. Examples : "After carrying heavy boxes all day, Sarah felt a deep ache in her trapezii. " anatomy medicine physiology body organ Chat with AIVocabulary GamePractice Reading