trapezoid 
1. a quadrilateral with two parallel sides • Derivationally related forms: trapezoidal • Regions: United States, United States of America, America, the States, US, U.S., USA, U.S.A. • Hypernyms: quadrilateral, quadrangle, tetragon 2. the wrist bone between the trapezium and the capitate bones • Syn: trapezoid bone, os trapezoideum • Hypernyms: carpal bone, carpal, wrist bone
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