Where does “trestle” come from?

Trestle comes from Middle English trestel, from Old French trestel, from Late Latin transtillum, meaning a crossbeam or support structure.

trestle (English): A horizontal member supported near each end by a...

Definitions

Step	Language	Word	Meaning
1	Middle English	trestel	—
2	Old French	trestel	crossbeam
3	Latin	trānstellum	—
4	Latin	transtrum	crossbeam, transom; thwart of a vessel
5	Latin	trāns	—
6	Latin	Padus	—
7	Lepontic	Bodincus	—
8	Proto-Indo-European	bʰudʰmḗn	bottom
9	Proto-Indo-European	dʰewbʰ-	deep
10	Proto-Indo-European	dʰewh₂-	smoke; mist, haze

trestle — Etymology, Origin & Word History | Etymology Explorer