mist n.
  1. Visible watery vapor suspended in the atmosphere, at or near the surface of the earth; fog.
  2. Coarse, watery vapor, floating or falling in visible particles, approaching the form of rain; as, Scotch mist.
  3. Hence, anything which dims or darkens, and obscures or intercepts vision.
     His passion cast a mist before his sense.   --Dryden.
  Mist flower Bot., a composite plant (Eupatorium coelestinum), having heart-shaped leaves, and corymbs of lavender-blue flowers.  It is found in the Western and Southern United States.
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  Eupatorium coelestinum
       n : rhizomatous plant of central and southeastern United States
           and West Indies having large showy heads of clear blue
           flowers; sometimes placed in genus Eupatorium [syn: mistflower,
            mist-flower, ageratum, Conoclinium coelestinum]