tree sparrow trees·par·row uncommon noun 1. Eurasian sparrow smaller than the house sparrow Synonymstree sparrowPasser montanus 2. finch common in winter in the northern U.S. Synonymstree sparrowSpizella arborea Related words Broader terms New World sparrowsparrow Parts SpizellaPasser WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
