The Collaborative International Dictionary of English v.0.48:

Chloride \Chlo"ride\, n. (Chem.)
   A binary compound of chlorine with another element or
   radical; as, chloride of sodium (common salt).
   [1913 Webster]

   Chloride of ammonium, sal ammoniac.

   Chloride of lime, bleaching powder; a grayish white
      substance, CaOCl2, used in bleaching and disinfecting;
      -- called more properly calcium hypochlorite. See
      Hypochlorous acid, under Hypochlorous.

   Mercuric chloride, corrosive sublimate.
      [1913 Webster]

WordNet (r) 3.0 (2006):

chloride of lime
    n 1: a white powder comprised of calcium hydroxide and chloride
         and hypochlorite and used to bleach and/or disinfect [syn:
         bleaching powder, chlorinated lime, chloride of lime]