תְּחוּם, (cmp. חוֹמָה) [surrounded, marked place,] dominion, area, district, border, limits. Tosef. Shebi. IV, 9, a. fr. בת׳ צור in the district of Tyre. Ib. 11 ת׳ ארץ ישראל וכ׳ the border lines of Palestine (with regard to agricultural laws) are &c.; (Y. ib. VI, 36ᶜ top תְּחוּמֵי pl.).—Y. Ber. VIII, 12ᶜ top (ref. to Gen. I, 8) לאור … היום יהא תְחוּמְךָ וכ׳ to the light he said, the day be thy dominion, to the darkness he said, the night be thy dominion; Gen. R. s. 3; Yalk. Job 924. Gen. R. s. 6 על ידי שנכנס בתְחוּמוֹ וכ׳ because it (the moon) trespassed on its neighbor’s (the sun’s) dominion; Yalk. ib. 8; a. fr.—Esp. ת׳ שבת, or ת׳ the (marked off) area around a town or place within which it is permitted to move on the Sabbath (based on Ex. XVI, 29), Sabbath limits (two thousand cubits in every direction). Erub. IV, 3. Ib. III, 4. Ib. 51ᵇ ויצא עשיר חוץ לת׳ וכ׳ and the rich man may go (on Friday) beyond the Sabbath district and say, this be my resting point (שְׁבִיתָה). Ḥag. 15ᵃ עד כאן ת׳ שבת here the Sabbath limits end (you dare not go beyond). Ab. Zar. 8ᵇ עיר … ות׳ שסומכין וכ׳ the town in which an ordination takes place, shall be destroyed; and the Sabbath district (around it) in which an ordination is held, shall be laid waste; a. fr.—Pl. תְּחוּמִים, תְּחוּמִין. Ib. הלך … בין שני תְחוּמֵי שבת וכ׳ he went and sat down (to ordain scholars) between two mountains, and between two large towns, between two Sabbath districts (in an area belonging to neither town), between Usha &c. Erub. l. c. כגון שיש לו … ושני תחומי שבת ביניהן when he has two houses with two Sabbath distances between them. Ib. 44ᵇ אם היו ת׳ … נבלעין וכ׳ if the limits which the scholars assigned to him (to travel on the Sabbath for public necessities) overlapped his own (ordinary) Sabbath limits. Ib., a. e. הבלעת ת׳ the overlapping of districts. Ib. 35ᵇ ת׳ דאורייתא נינהו the law concerning Sabbath limits is Biblical; ib. 36ᵃ ת׳ דרבנן is a rabbinical enactment.—Y. Shebi. l. c., v. supra; a. v. fr.—[Tosef. Shebi. I, 9 תחומין, תחומן, v. תָּחוּב.]