n. 1 a supporting structure for a table etc., consisting of two frames fixed at an angle or hinged or of a bar supported by two divergent pairs of legs. 2 (in full trestle-table) a table consisting of a board or boards laid on trestles or other supports. 3 (in full trestle-work) an open braced framework to support a bridge etc. 4 (in full trestle-tree) Naut. each of a pair of horizontal pieces on a lower mast supporting the topmast etc.
[ ME f. OF trestel ult. f. L transtrum ]