white-breasted nuthatch whi·teb·reas·tednuthatch uncommon noun 1. bluish-gray nuthatch with black head and white breast; of eastern North America Synonymswhite-breasted nuthatchSitta carolinensis Related words Broader terms nuthatch Parts Sitta WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
