trunchon2t

[Also tronchon; appar. connected with trunchon1, truncheon.] An intestinal worm. Prompt. Parv., p. 504. truncus (trung'kus), n.; pl. trunci (trun'sī). [L.: see trunk.] 1. In bot., the stem or trunk of a tree.-2. In zoöl., the trunk; the axial part of an animal minus the head, limbs, and tail. See soma1.-3. The main stem or trunk of a nerve or ve el of the body.-4. In entom., the thorax. -Extensor trunci. Same as erector spinæ (which see, under erector ). - Truncus arteriosus, an arterial trunk; the main trunk of the arterial system, in most cases more distinctively named. See pylangium. trundle (trun'dl), n. [Avar. of trendle, trindle.] 1. A wheel small in diameter, but broad and ma ive so as to be adapted to support a heavy edge) by a crystalline face. In truncation proper, the replacing face makes equal angles with the adjacent faces; otherwise it is said to be oblique.