From The Collaborative International Dictionary of English v.0.48 [gcide]: Butter \But"ter\, v. t. [imp. & p. p. Buttered (?); p. pr. & vb. n. Buttering.] 1. To cover or spread with butter. [1913 Webster] I know what's what. I know on which side My bread is buttered. --Ford. [1913 Webster] 2. To increase, as stakes, at every throw or every game. [Cant] --Johnson. [1913 Webster]