The "corners" or "ends" of the earth are its "wings" (kanephoth ha-'arets), i.e. its borders or extremities. The word in general means a wing, because the wing of a bird is used as a covering for its young, and from this meaning it acquires that of the extremity of anything stretched out. It is thus used inDe 22:12: "Thou shalt make thee fringes upon the four borders (wings) of thy vesture, wherewith thou coverest thyself." It thus also means the coasts or boundaries of the land surface of the earth; its extremities. It is translated "corners" inIsa 11:12; "ends" inJob 37:3,38:13. The "four corners" of the earth (Isa 11:12) or "land" (Eze 7:2) are therefore simply the extremities of the land in the four cardinal directions.
See alsoASTRONOMY, sec. III, 3.
E. W. Maunder