DICT.TW Dictionary Taiwan

 Vast a. [Compar. Vaster superl. Vastest.]
 1. Waste; desert; desolate; lonely. [Obs.]
    The empty, vast, and wandering air.   --Shak.
 2. Of great extent; very spacious or large; also, huge in bulk; immense; enormous; as, the vast ocean; vast mountains; the vast empire of Russia.
    Through the vast and boundless deep.   --Milton.
 3. Very great in numbers, quantity, or amount; as, a vast army; a vast sum of money.
 4. Very great in force; mighty; as, vast labor.
 5. Very great in importance; as, a subject of vast concern.
 Syn: -- Enormous; huge; immense; mighty.