Source : Webster's Revised Unabridged Dictionary (1913)

Mucous \Mu"cous\, a. [L. mucosus, fr. mucus mucus.]
   1. Of, pertaining to, or resembling, mucus; slimy, ropy, or
      stringy, and lubricous; as, a mucous substance.

   2. Secreting a slimy or mucigenous substance; as, the mucous
      membrane.

   {Mucous membrane}. (Anat.) See under {Membrane}.

   {Mucous patches} (Med.), elevated patches found in the mucous
      membranes of the mouth and anus, usually due to syphilis.
      

   {Mucous tissue} (Anat.), a form of connective tissue in an
      early stage of development, found in the umbilical cord
      and in the embryo, and also in certain tumors called
      myxomata.

Source : WordNet®

mucous
     adj : of or secreting or covered with or resembling mucus; "mucous
           tissue"; "mucous glands of the intestine" [syn: {mucose}]