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 the heavy backpack all day, Maria felt a knot of tension in her trapezius muscle. " body anatomy physiology medicine organ science Chat with AIVocabulary GamePractice Reading