- (US, regional) A large yellow water lily (Nuphar polysepala) found in the northwestern United States.
- (US, regional) The seeds of this water lily, eaten by the Klamath and others.
- (Nuphar polysepala): Rocky Mountain spatterdock
- wókash (Gatschet)
- the seeds of the yellow water lily (Nuphar polysepala), which ripen in July and August and are harvested, parched, hulled, and eaten by the Klamath and Modoc
- Gatschet, Samuel S. (1890). The Klamath Indians of southwestern Oregon. Volume II, Part II. United States Government Printing Office.
- Sturtevant, William C. (1978). Handbook of North American Indians, page 449
- 1964, University of California publications in linguistics, volumes 32-33, page 223