Libation wine/ wine offered to idols/ wine touched by heathen hand (Forbidden to Jews)
Wine designated for use in idol worship, or wine that became ritually defiled by contact with the hand of an idol worshipper, and is therefore forbidden to drink (nesech means the pouring of liquids for a religious purpose).
("And for the drink offering, a fourth of a hin of wine shall be prepared with the burnt offering"—Numbers 15:5, and likewise: "Libation wine is forbidden and renders forbidden in any amount: wine with wine and water with water in any amount, wine with water and water with wine"—Avodah Zarah 5b)
Translation
Expression (Hebrew)
יֵין נֶסֶךְ
Definition (Hebrew)
יַיִן שֶׁיֹּועַד לְשִׁימּוּשׁ בְּפֻולְחָן אֱלִילִי אוֹ שֶׁנִּטְמָא בְּמַגָּע יָד שֶׁל עוֹבֵד אֱלִילִים בּוֹ וְעַל פִּי הַדָּת אָסוּר לִשְׁתִיָּה (נֶסֶךְ מַשְׁמָע יְצִיקַת נוֹזְלִים לְמַטָּרָה דָּתִית).
("וְיַיִן לַנֶּסֶךְ רְבִיעִית הַהִין תַּעֲשֶׂה עַל הָעֹלָה"- בַּמִּדְבָּר טוּ ה, וְכֵן:"יֵין נֶסֶךְ אָסוּר וְאוֹסֵר בְּכָל שֶׁהוּא יַיִן בְּיַיִן וּמַיִם בְּמַיִם בְּכָל שֶׁהוּא יַיִן בְּמַיִם וּמַיִם בְּיַיִן"- עֲבוֹדָה זָרָה ה ח)