from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. sweet green or white mint-flavored liqueur
Sorry, no etymologies found.
Also, it should be pointed out that we have a number of pleasant drinks which are not wine at all -- "high-balls" and "gin rickeys" and "peppered punches"; also vermouthe and creme de menthe and absinthe, which I believe, are green in hue, and therefore entirely safe.