资料来源 : Webster's Revised Unabridged Dictionary (1913)

Visionary \Vi"sion*a*ry\, n.; pl. {Visionaries}.
   1. One whose imagination is disturbed; one who sees visions
      or phantoms.

   2. One whose imagination overpowers his reason and controls
      his judgment; an unpractical schemer; one who builds
      castles in the air; a daydreamer.