MegAntioch 3 :הוּא בְנָא מְדִינְתָא רַבְתָא עַל סְפַר יַמָא לְמִהוֵי לֵיה לְבֵית מַלכוּ‏ : he built a great city on the sea coast to be his royal capital
See the entire entry for bēṯ malkū, bēṯ malkūṯā n.m. palace; kingdom

MegAntioch 3 :הוּא בְנָא מְדִינְתָא רַבְתָא עַל סְפַר יַמָא‏ : he built a great city on the seashore
See the entire entry for məḏīnā, məḏīntā/mḏīttā n.f. province; capital city