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

2. (Anat.)

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

TRAPEZOIDAL
Trap`e*zoid"al, a. Etym: [Cf. F. trapézoïdal.]

1. Having the form of a trapezoid; trapezoid.

2. (Min.)

Defn: Tranpezohedral.

TRAPHOLE
Trap"hole, n. (Mil.)

Defn: See Trou-de-loup.

TRAPPEAN
Trap"pe*an, a. Etym: [Cf. F. trappéen. See Trap a kind of rock.]
(Min.)