trestle

Etymology

From Middle English trestel, from Old French trestel (“crossbeam”) (French tréteau), from Latin trānstellum, diminutive of trānstrum.

noun

1. A horizontal member supported near each end by a pair of divergent legs, such as sawhorses.
2. A folding or fixed set of legs used to support a tabletop or planks.
   He turned the knob, but the door was locked. Retracing his steps past a vacant lot, the young man entered a shop where a colored man was employed in varnishing a coffin, which stood on two trestles in the middle of the floor. 1900, Charles W. Chesnutt, chapter I, in The House Behind the Cedars
3. A framework, using spreading, divergent pairs of legs used to support a bridge.
4. A trestle bridge.