trapezium
1. [ noun ] (in US) a quadrilateral with no parallel sides
Related terms: parallelogram quadrilateral US
2. [ noun ] (astronomy) a multiple star in the constellation of Orion
Synonyms: the_trapezium
Related terms: multiple_star
3. [ noun ] (anatomy,zoology) the wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals
Synonyms: os_trapezium trapezium_bone
Related terms: carpal_bone
Similar spelling:   trapezius
  trapeze
  trapezoid
  trapezoidal