Gillywater

[zanooda2]

I have a question to the English-speaking posters: what do you make of 
the word "gillywater"? Any idea what it may mean? I've always assumed 
that "gillyweed" had something to do with "gills", but this wouldn't 
work with a beverage(gillywater), would it :-)? Is there some 
connection here to gillyflowers, maybe? Or to the other "gill" - liquid 
measure? Does anyone know anything at all about this? I need it for a 
translation, and I would appreciate any idea :-).

zanooda