The Collaborative International Dictionary of English v.0.48:

Icy \I"cy\, a. [Compar. Icier; superl. Iciest.] [AS.
   [imac]sig. See Ice.]
   1. Pertaining to, resembling, or abounding in, ice; cold;
      frosty. "Icy chains." --Shak. "Icy region." --Boyle. "Icy
      seas." --Pope.
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   2. Characterized by coldness, as of manner, influence, etc.;
      chilling; frigid; cold.
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            Icy was the deportment with which Philip received
            these demonstrations of affection.    --Motley.
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