truss

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

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

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

support structurally

truss the roofs

trussed bridges

secure with or as if with ropes

tie down the prisoners

tie up the old newspapers and bring them to the recycling shed

tie the wings and legs of a bird before cooking it