Where does “tuffe” come from?

tuffe (Old French) comes from Late Latin tufa, from Proto-Germanic þūbaz.

Ancestry of “tuffe”, step by step

Step	Language	Word	Meaning
1	Late Latin	tufa	helmet crest; a kind of helmet crest or plume; a...
2	Proto-Germanic	þūbaz	—

tuffe — Etymology, Origin & Word History | Etymology Explorer