rummy UK /ˈɹʌmɪ/US /ˈɹʌmi/adjective 2noun 2forms 3 adjective2 •Resembling or tasting of rum. •(informal, old-fashioned) Peculiar; odd.‘Up to this time, you understand, we had only built a bit of a slab hut [...] a cow-yard, and the rummiest bit of fencing you every looked at.’ — 1911 noun2 •A card game with many rule variants, conceptually similar to mahjong. •A rum-drinking alcoholic. formsrummies · rummier · rummiest