Chaucer, Man of Law's Tale, 1

216. (k) In hydraul, eng in., the end of a weir or dam where 3. In hort., a growing plant with its root; also, a tuber or bulb. dation. Ther is at the west syde of Itaille, Doun at the roote of Vesulus the colde, A lusty playne, abundant of vitaille.