Nut·hatch n.  Zool. Any one of several species of birds of the genus Sitta, as the European species (Sitta Europaea).  The white-breasted nuthatch (Sitta Carolinensis), the red-breasted nuthatch (Sitta Canadensis), the pygmy nuthatch (Sitta pygmaea), and others, are American.
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  Sitta canadensis
       n : bluish-gray nuthatch with reddish breast; of northern
           coniferous forests [syn: red-breasted nuthatch]