grog Definition
grognoun 1. A mixture of alcoholic spirit (especially rum) and water, as formerly drunk by sailors.
(Austral & NZ)
2. colloq
Etymology: 18c: from Old Grog, the nickname (probably deriving from his habit of wearing a
grogram cloak) of British admiral Edward Vernon, who in 1740 ordered the naval ration of rum to be diluted with water.