蝦夷方言藻汐草

The recorded セヽ repeats se. Tamura, Kayano and Nakagawa give sesekka for heating or warming, supporting the doubled k in the modern form. Batchelor separately lists a heating verb and a hot-water noun Sesekka, the latter matching 湯; a second extraction of that edition also preserves the noun. Retrieved Mukawa contexts concern heating water, soup and other objects. Those verb uses do not establish a hot-water noun sense in modern usage. sesek wakka is a compositional comparison that adds an unrecorded water word. The historical noun/verb relationship remains qualified.