Lexical Definition

‎טַבּוּר‎ ṭabbûwr (tab-boor') highest ^H:N-M
from an unused root meaning to pile up

middle, midst.

• properly, accumulated
• i.e. (by implication) a summit

1) centre, midst, navel, highest part

Brown-Driver-Briggs

‎טַבּוּר‎ noun [masculine] highest part, centre (according to ᵐ5 ᵑ9 navel, so Late Hebrew id., and ‎טִיבּוּר‎, Aramaic ‎טִיבּוּרָא‎, ‎טִיבּוּרְיָא‎) — ‎הִנֵּה עָם יֹרְדִים מֵעִם טַבּוּר הארץ‎ Judg 9:37 behold people descending from the highest part of the land; ‎ישְׁבֵי עַלטַֿבּוּר הארץ‎ Ezek 38:12 those dwelling upon the navel of the earth, i.e. upon the mountainous country of Israel, central and prominent in the earth.

Brown-Driver-Briggs References