- (a.) Having the form of a trapezoid; trapezoidal; as, the trapezoid ligament which connects the coracoid process and the clavicle.
- (a.) Of or pertaining to the trapezoid ligament; as, the trapezoid line.
- (n.) A plane four-sided figure, having two sides parallel to each other.
- (n.) A bone of the carpus at the base of the second metacarpal, or index finger.