Definitions of icy:

• adjective:   covered with or containing or consisting of ice

  Example: "Icy northern waters"

• adjective:   shiny and slick as with a thin coating of ice

  Example: "Roads and trees glazed with an icy film"

• adjective:   extremely cold

  Example: "Icy hands"

• adjective:   devoid of warmth and cordiality; expressive of unfriendliness or disdain

  Example: "Icy stare"