צִיּוּן, heap of stones, mark, esp. the mark put up to indicate the neighborhood of an unclean place. Erub. 54ᵇ מאי … צ׳ לישנא דסימנא הוא what evidence is there that this tsiyyun (Jer. XXXI, 20) means sign? Answ. ref. to Ez. XXXIX, 15. Y. Shek. I, 46ᵃ מיכן לצ׳ from here (Ez. l. c.) we have an evidence for the custom of marking sunken graves; M. Kat. 5ᵃ. Ib. 5ᵇ אין מעמידין צ׳ במקום וכ׳ we must not put up a mark on the very spot of uncleanness. Ex. R. s. 52 (play on צִיוֹן, Cant. III, 11) מה הצ׳ הזה נראה באצבע וכ׳ as a mark is seen (pointed at) with the finger, so is Israel (distinguishable by his features); a. e.—Pl. צִיּוּנִים, צִיּוּנִין. Erub. l. c. (ref. to Jer. l. c.) עשו צ׳ לתורה make marks (mnemonical notes) for the study of the Law, v. סִימָן; Yalk. Jer. 315.—Denom. צִיֵּן.