colloq. or slang. ? Obs. [f. TIFF sb.2 Cf. TIFT v.2] trans. To drink; esp. to drink slowly or in small portions, to sip.
1769. Trinculo’s Trip, 25. I was tiffing a stout cann of flip.
1809–11. Combe, Syntax, V. 140. He tiff’d his punch, and went to rest.
