Being of great extent; very spacious or large; as the vast ocean; a vast abyss; the vast empire of Russia; the vast plains of Syria; the vast domains of the Almighty.

Huge in bulk and extent; as the vast mountains of Asia; the vast range of the Andes.

Very great in numbers or amount; as a vast army; vast numbers or multitudes were slain; vast sums of money have been expended to gratify pride and ambition.

Very great in force; mighty; as vast efforts; vast labor.

Very great in importance; as a subject of vast concern.

An empty waste. Through the vast of heav’n it sounded. The watery vast.