ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ noun
Etymology: Middle English watercresse, from water + cresse cress — more at cress
1. : any of several water-loving cresses (family Cruciferae): as
a. : a perennial cress ( Nasturtium officinale ) that grows chiefly in springs or running water and has creeping or floating freely rooting stems and roundish somewhat fleshy pungent leaves which are used in salads and sometimes as a potherb
b. : marsh cress
c. : american watercress
2. : cress green