An alcoholic liquor, especially rum diluted with water. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "grog" in a sentence
"One glass of what you call the grog; and then we will play a pleasant game with those"
"Even the females, it would appear, have some of them of late years learned the habit of drinking grog from the English sailors; and Captain Dillon gives an account of a priestess, who visited him on board the "Besearch," and who, having among several other somewhat indecorous requests, demanded a tumbler of rum, quaffed off the whole at a draught as soon as it was set before her."
"Mr Collie said that Groggle was simply a play on the word grog, Australian slang for alcohol, and he had decided on the name after discovering that grogger. com was taken."