Trapezoid

Part of speech: noun (n.)

1. A plane four-sided figure, having two sides parallel to each other.

2. A bone of the carpus at the base of the second metacarpal, or index finger.

Part of speech: adjective (a.)

1. Having the form of a trapezoid; trapezoidal; as, the trapezoid ligament which connects the coracoid process and the clavicle.

2. Of or pertaining to the trapezoid ligament; as, the trapezoid line.