a. Pertaining to Bordeaux in the south of France. -- n. A claret wine from Bordeaux. [ 1913 Webster ]
. (Hort.) A fungicidal mixture composed of blue vitriol, lime, and water. The formula in common use is: blue vitriol, 6 lbs.; lime, 4 lbs.; water, 35 -- 50 gallons. [ Webster 1913 Suppl. ]