[tart] adj [ME, fr. OE teart sharp, severe; akin to MHG traz spite] (14c) 1: agreeably sharp or acid to the taste
2: marked by a biting, acrimonious, or cutting quality -- tart.ish adj -- tart.ly adv -- tart.ness n
[2]tart n [ME tarte, fr. MF] (15c) 1: a dish baked in a pastry shell: pie: as a: a small pie or pastry shell without a top containing jelly, custard, or fruit b: a small pie made of pastry folded over a filling
2: prostitute