trapezium

Noun
  1. A quadrilateral with no parallel sides (synset 113904038)
    domain region: america, the states, u.s., u.s.a., united states, united states of america, us, usa - 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
    is a type of: quadrangle, quadrilateral, tetragon - a four-sided polygon
  2. A multiple star in the constellation of Orion (synset 109484199)
    is a type of: multiple star - a system of three or more stars associated by gravity
  3. The wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals (synset 105280390)
    is a type of: carpal, carpal bone, wrist bone - any of the eight small bones of the wrist of primates
    same as: os trapezium, trapezium bone

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