The Collaborative International Dictionary of English v.0.48:

Stonechat \Stone"chat`\, n. [Stone + chat.] [So called from the
   similarity of its alarm note to the clicking together of two
   pebbles.] (Zool.)
   (a) A small, active, and very common European singing bird
       (Pratincola rubicola); -- called also chickstone,
       stonechacker, stonechatter, stoneclink,
       stonesmith.
   (b) The wheatear.
   (c) The blue titmouse.
       [1913 Webster]

   Note: The name is sometimes applied to various species of
         Saxicola, Pratincola, and allied genera; as, the
         pied stonechat of India (Saxicola picata).
         [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Wheatear \Wheat"ear`\, n. (Zool.)
   A small European singing bird (Saxicola [oe]nanthe). The
   male is white beneath, bluish gray above, with black wings
   and a black stripe through each eye. The tail is black at the
   tip and in the middle, but white at the base and on each
   side. Called also checkbird, chickell, dykehopper,
   fallow chat, fallow finch, stonechat, and whitetail.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Chat \Chat\, n.
   1. Light, familiar talk; conversation; gossip.
      [1913 Webster]

            Snuff, or fan, supply each pause of chat,
            With singing, laughing, ogling, and all that.
                                                  --Pope.
      [1913 Webster]

   2. (Zool.) A bird of the genus Icteria, allied to the
      warblers, in America. The best known species are the
      yellow-breasted chat (Icteria viridis), and the
      long-tailed chat (Icteria longicauda). In Europe the
      name is given to several birds of the family
      Saxicolid[ae], as the stonechat, and whinchat.
      [1913 Webster]

   Bush chat. (Zool.) See under Bush.
      [1913 Webster]

WordNet (r) 3.0 (2006):

stonechat
    n 1: common European chat with black plumage and a reddish-brown
         breast [syn: stonechat, Saxicola torquata]