טִיבּוּר, [rounded, arched,] navel, umbilicus. Sabb. XVIII, 3 (128ᵇ) את הט׳ the infant’s navel string. Nidd. 13ᵇ על טִבּוּרוֹ (Ar. טיב׳) above his navel. Yoma 85ᵃ מטיבורו the formation of the embryo begins from the navel. Midr. Till. to Ps. XIX; a. fr.—Trnsf. centre or highest part. Meg. 6ᵃ (homiletic etymol. of טבריה) שיושבת בטִיבּוּרָהּ של א"י it is situated on the height of Palestine.