TgO Num35:5 :וְקַרתָא בִמצִיַע דֵין יְהֵי לְהוֹן רַוחֵי קִרוַיָא‏ : (2000 cubits in every direction) with the city in the middle: this should be the areas of cities for you
See the entire entry for mṣīˁ, mṣīˁā n.m. midst

TgO Num35:5 :וְתִמשְחוּן מִבַרָא לְקַרתָא לרוח קִדוּמָא תְרֵין אַלפִין אַמִין‏ : you should measure 2,000 cubits outside the city in an eastward direction
See the entire entry for mšḥ#2 vb. to measure