Definition

A waste region; boundless space; immensity. "The watery vast." Pope. Michael bid sound The archangel trumpet. Through the vast of heaven It sounded. Milton.

Other Definitions

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VAST (adjective)

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; ...