Waʹter-tāth, n.

n. [From water and Prov. Eng. tath, cow’s or sheep’s dung dropped on the field, the luxuriant grass growing about the dung of cattle, Icel. tad, dung, tada, the hay of a manured field.] A species of coarse grass growing in wet grounds, and supposed to be injurious to sheep. [Prov. Eng.]