סִילּוֹן, (סָלַל II; cmp. סוּלָּם) path, gutter, in gen. duct, pipe, tube. Kil. VII, 1 הבריכה בדלעת או בס׳ if in sinking a vine he conducted it through gourd shells or through a pipe (so that it could draw no nourishment from the ground which it passed); Y. Bicc. I, 63ᵈ top. Y. Kil. VII, beg. 30ᵈ ס׳ של חרס an earthen pipe; ס׳ של אבר a leaden pipe. Sabb. III, 4 (38ᵇ) הכיאו סל׳ של צונן וכ׳ (Y. a. Bab. ed. סיל׳) they passed a duct of cold water through an arm of the hot springs. Tosef. Makhsh. II, 2 ס׳ של יוצר an earthen water pipe. Bekh. 44ᵇ, a. e. ס׳ החוזר the urin in the urinary duct which is forced back. Num. R. s. 14 כמין ס׳ של אש like a duct of fire; a. fr.—B. Bath. 99ᵇ בית הס׳ comment., v. קִילוֹן.—Pl. סִילּוֹנוֹת. Kel. II, 3; Tosef. Kel. B. Kam. II, 3. Tosef. Erub. IX (VI), 18 ס׳ שבכרכין the culverts in large cities; Y. ib. VIII, end, 25ᵇ. Gen. R. s. 32 הם קלקלו ס׳ שלהן וכ׳ (not סילונית) they abused their (seminal) ducts, therefore the Lord changed the order (of irrigation) of the world. Pirké d’R. El. ch. V ס׳ עולין וכ׳ (not … נית) ducts rise from the depth to irrigate &c.; Yalk. Gen. 20 (corr. acc.).