Fig. 667. Trumpet.

Trumpet, Her. The Roman tuba; a long straight tube expanded at its extremity.

Truncated. With the top cut off parallel to the base.

Trunnions. The side supports on which a cannon rests on its carriage.

Truss, Arch. The system of timbers mutually supporting each other and the roof.

Trussed, Her. Said of birds, with closed wings.

Trussing, Her. Said of birds of prey, devouring.

Tuba, R. A straight bronze trumpet with a small mouthpiece at one end, the other being wide and bell-shaped. (Cf. Cornu.)

Tubilustrum, Quinquatrus, R. Festivals held at Rome twice a year, for the purification of trumpets (tubæ).