tule /ˈtuːli/ noun2 •(US) Any of a number of large freshwater sedges of western North America formerly classified in the genus Scirpus, but now mostly as SchoenoplectusThis consisted of a two-room house built of chittim poles, with no floor, a thatched roof of tules, and a windbreak of buffalo and cowhides to the north of it. — 1964 •A type of chinook salmon which spawns in the Columbia River basin formstules