'Flank' in the Bible

“Zebulun will dwell at the seashore;And he shall be a haven for ships,And his flank shall be toward Sidon.

therefore, behold, I am going to deprive the flank of Moab of its cities, of its cities which are on its frontiers, the glory of the land, Beth-jeshimoth, Baal-meon and Kiriathaim,