■ noun
1》 a framework consisting of a horizontal beam supported by two pairs of sloping legs, used in pairs to support a flat surface such as a table top.
2》 (also ~work ) an open braced framework used to support an elevated structure such as a bridge.
3》 (also ~tree ) each of a pair of horizontal pieces on a sailing ship's lower mast supporting the topmast.
Origin
ME: from OFr. trestel , based on L. transtrum 'beam'.