Where does “tréteau” come from?

tréteau (French) comes from Old French trestel, from Latin trānstellum, from Latin transtrum, from Latin trāns, from Latin Padus, from Lepontic Bodincus, from Proto-Indo-European bʰudʰmḗn, from Proto-Indo-European dʰewbʰ- — smoke; mist, haze.

tréteau (French): trestle; sawhorse

Definitions

trestle; sawhorse

Ancestry of “tréteau”, step by step

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

Every word from Proto-Indo-European dʰewh₂- →Every word from Proto-Indo-European dʰewbʰ- →Every word from Proto-Indo-European bʰudʰmḗn →