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Phrase(s): salt something with something
1. Lit. to put a variety of salt or a salt substitute onto some food. • Oscar salts his food with a salt substitute. • Did you salt your meat with salt or something else? 2. Fig. to put something into something as a lure. (Refers to putting a bit of gold dust into a mine in order to deceive someone into buying the mine.) • The land agent salted the bank of the stream with a little gold dust hoping for a land rush to start. • Someone salted the mine to fool the prospectors.
McGrawhill's American Idioms And Phrasal Verbs