MUSTARD

noun Etymology: Middle English, from Anglo-French ~e, from must must, from Latin mustum Date: 13th century 1. a pungent yellow powder of the seeds of any of several common ~s ( Brassica hirta, B. nigra, or B. juncea ) used as a condiment or in medicine as a stimulant and diuretic, an emetic, or a counterirritant, zest , any of several herbs (genus Brassica of the family Cruciferae syn. Brassicaceae, the ~ family) with lobed leaves, yellow flowers, and linear beaked pods, a dark to moderate yellow, ~y adjective