n. 1 piquancy; a stimulating flavour or quality. 2 a keen enjoyment or interest. b (often foll. by for) relish. c gusto (entered into it with zest). 3 a scraping of orange or lemon peel as flavouring. zestful adj. zestfully adv. zestfulness n. zesty adj. (zestier, zestiest).
[ F zeste orange or lemon peel, of unkn. orig. ]