Source : Webster's Revised Unabridged Dictionary (1913)

Mavis \Ma"vis\ (m[=a]"v[i^]s), n. [F. mauvis, Arm. milvid,
   milfid, milc'hhouid, Corn. melhuez.] (Zo["o]l.)
   The European throstle or song thrush ({Turdus musicus}).

Source : WordNet®

mavis
     n : common Old World thrush noted for its song [syn: {song
         thrush}, {throstle}, {Turdus philomelos}]