trapezium

nouns

a quadrilateral with no parallel sides
trapezium
antonym
parallelogram
domain region
North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
America, U.S., U.S.A., US, USA, United States, United States of America, the States
is a type of (narrower)
a four-sided polygon
quadrangle, quadrilateral, tetragon
the wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals
os trapezium, trapezium, trapezium bone