WordWeb Online

1. Extremely cold
   "icy hands";
   - arctic, frigid, gelid, glacial, polar
    
2. Covered with, containing or consisting of ice
   "icy northern waters"
    
3. Shiny and slick as with a thin coating of ice
   "roads and trees glazed with an icy film"
    
4. Devoid of warmth and cordiality; expressive of unfriendliness or disdain
   "icy stare";
   - frigid, frosty, frozen, glacial, wintry

Derived forms: iciest, icier

See also: cold, frozen, glazed, shiny

Encyclopedia: Icy