Borrowed from French fronsac, named after the commune of Fronsac in the Gironde département.
Fronsac (countable and uncountable, plural Fronsacs)
- A red wine from the Bordeaux region.
2001, Jonathan Franzen, The Corrections:He’d used the last $220 of credit on his Visa card to buy eight bottles of a rather tasty Fronsac, and on Saturday night he’d thrown one last dinner party to rally his supporters on the faculty.