כְּבִיסָה f. (כָּבַס) 1) washing. Y. Shebi. VIII, 38ᵇ top כְּבִיסָתָן וחיי אחרים וכ׳ as between the use of the spring for their (the inhabitants’) washing purposes and for strangers’ living (drinking purposes); a. fr.—[Mikv. VIII, 1, v. כְּבִישָׁה.] —2) (also כְּבוּסָה) water mixed with alkaline substances, lye-water &c. Tosef. Shebi. VI, 25 פירות שביעית המשרה ולא לתוך הכ׳ … produces of the Sabbath year must not be used for an infusion nor for preparing lye-water; Succ. 40ᵃ; B. Kam. 102ᵃ; Y. Shebi. l. c.—Pl. כְּבִיסוֹת. Ib. VII, beg. 37ᵇ מיני כ׳ (ed. Krot. כניס׳, corr. acc.) alkaline plants.