[tra.pe.zi.us] n [NL, fr. trapezium; fr. the pair on the back forming together the figure of a trapezium] (ca. 1704): a large flat triangular superficial muscle of each side of the upper back
TRAPEZIUS
Meaning of TRAPEZIUS in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012