1. Boisson chaude ŕ base de rhum.
2. (Vieux) Boisson composée ordinairement d'une partie d'eau-de-vie et de trois parties d'eau.
ETYM So named from a nickname given to Admiral Vernon, in allusion to his wearing a grogram cloak in foul weather. He is said to have been the first to dilute the rum of the sailors (about 1745).
Rum cut with water.