TRES'TLE, noun tres'l.
1. The frame of a table.
2. A movable form for supporting any thing.
3. In bridges, a frame consisting of two posts with a head or cross beam and braces, on which rest the string-pieces. [This is the use of the word in New England. It is vulgarly pronounced trussel or trussl.]
Trestle-trees, in a ship, are two strong bars of timber, fixed horizontally on the opposite sides of the lower mast-head, to support the frame of the top and the top-mast.