Source : Webster's Revised Unabridged Dictionary (1913)

Nuthatch \Nut"hatch`\, n. [OE. nuthake. See 2d {Hack}.]
   (Zo["o]l.)
   Any one of several species of birds of the genus {Sitta}, as
   the European species ({Sitta Europ[ae]a}). The white-breasted
   nuthatch ({S. Carolinensis}), the red-breasted nuthatch ({S.
   Canadensis}), the pygmy nuthatch ({S. pygm[ae]a}), and
   others, are American.

Source : WordNet®

Sitta europaea
     n : a kind of nuthatch [syn: {European nuthatch}]