The Collaborative International Dictionary of English v.0.48:

Tinea \Tin"e*a\, n. [L., a worm, a moth.]
   1. (Med.) A name applied to various skin diseases, but
      especially to ringworm. See Ringworm, and Sycosis.
      [1913 Webster]

   2. (Zool.) A genus of small Lepidoptera, including the
      clothes moths and carpet moths.
      [1913 Webster]

WordNet (r) 3.0 (2006):

tinea
    n 1: infections of the skin or nails caused by fungi and
         appearing as itching circular patches [syn: tinea,
         ringworm, roundworm]
    2: type genus of the Tineidae: clothes moths [syn: Tinea,
       genus Tinea]