Source : Webster's Revised Unabridged Dictionary (1913)

Tomtit \Tom"tit`\, n. [Tom (see {Tomboy}) + tit the bird.]
   (Zo["o]l.)
   (a) A titmouse, esp. the blue titmouse. [Prov.eng.]
   (b) The wren. [Prov.eng.]

Source : WordNet®

tomtit
     n : widely distributed European titmouse with bright cobalt blue
         wings and tail and crown of the head [syn: {blue tit}, {Parus
         caeruleus}]