Certain four-sided figures

WordNet Word definitions in WordNet
n. a quadrilateral with no parallel sides [ant: parallelogram ] a multiple star in the constellation of Orion [syn: the Trapezium ] the wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals [syn: trapezium bone , os ...

Wikipedia Word definitions in Wikipedia
Trapezia is a genus of guard crabs in the family Trapeziidae . Like other members of this family, they live in association with corals , feeding on coral tissue and mucus, and defending the corals from predators, like starfish . It contains the following ...

Wiktionary Word definitions in Wiktionary
n. (plural of trapezium English)

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Trapezium \Tra*pe"zi*um\, n.; pl. E. Trapeziums , L. Trapezia . [NL., fr. Gr. ? a little table, an irregular four-sided figure, dim. of ? a table, for ?; ? (see Tetra- ) + ? foot, akin to ? foot; hence, originally, a table with four feet. See Foot .] (Geom.) ...