1. Either of two flat triangular muscles of the shoulder and upper back that are involved in moving the shoulders and arms
   "The trapezius muscle is often tense in people who work at computers"; "The musculus trapezius muscle is often tense in people who work at computers"; "The cowl muscles, also known as trapezius muscles, are visible when shrugging the shoulders";
   - trapezius muscle, cowl muscle, musculus trapezius

Derived forms: trapezii, trapeziuses

Type of: skeletal muscle, striated muscle

Encyclopedia: Trapezius