4. Chiefly Southern & South Midland U.S. To apply pressure to; press.
5. Slang To flirt with or make sexual advances to.
[Middle English mash- (as in mashfat, mash tub), from Old English *msc, *msc, mx- (in mxwyrt, wort); see meik- in Indo-European roots. V., sense 5, perhaps from Romany mash, to entice.]
mash /m/ v. [T] mashes to press into a mass: She mashed bananas to feed to her baby.||Mashed potatoes taste good with butter or gravy. n. [C;U] mashes a wet mixture, such as grain and water: Distillers use a mash to make alcohol.