נִיסּוּךְ, נִסּ׳ m. (נָסַךְ) 1) libation. Succ. IV, 1 נ׳ המים שבעה the water libation (on the Succoth festival) is continued for seven days. Y. ib. 54ᵈ top; Tosef. ib. III, 15 נִיסּוּכוֹ בקדושה at its libation the laws of sanctity must be observed; (Tosef. Meïl. I, 16 נְסִיכָתוֹ). Zeb. VI, 2. Snh. 62ᵃ נ׳ libation to idols; a. fr.—Pl. נִיסּוּכִים, נִיסּוּכִין, נִסּ׳. Gen. R. s. 78, end כמה נ׳ ניסך יעקב how many libations Jacob performed. Taan. 2ᵇ, a. e. שני נ׳ two kinds of libations. —2) the manipulation by an idolater by which he causes wine to be forbidden to Jews as יֵין נֶסֶךְ (v. נָסַךְ). Ab. Zar. 56ᵇ (in Chald. dict.) נ׳ דרגל … נ׳ operating with the foot is not called a ritual manipulation (does not affect the wine); a. e.