Noun
trapezius (plural trapezii or trapeziuses)
(anatomy) 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.
The trapezius muscle resembles a trapezium (trapezoid in American English), or diamond-shaped quadrilateral. The word "spinotrapezius" refers to the human trapezius, although it is not commonly used in modern texts. In other mammals, it refers to a portion of the analogous muscle.
Damage to the accessory nerve (XI) will lead to ipsilateral weakness in the trapezius muscle. Source: Internet
The archer's lower trapezius muscles are used to pull the arrow to the anchor point. Source: Internet
When executing the punch, one must relax and not use the shoulders or activate the trapezius muscles. Source: Internet