Meaning

noun (medicine) a bandage consisting of a pad and belt; worn to hold a hernia in place by pressure

noun a framework of beams (rafters, posts, struts) forming a rigid structure that supports a roof or bridge or other structure

noun (architecture) a triangular bracket of brick or stone (usually of slight extent)

originFrom Middle English trusse, from Old French trousse, torse, from Vulgar Latin *torsus, variant of Classical Latin tortus, past participle of torqueō. Doublet of torse and trousse.

Etymology from Wiktionary, CC BY-SA 3.0