black walnut black·wal·nut uncommon noun 1. North American walnut tree with hard dark wood and edible nut Synonymsblack walnutblack walnut treeblack hickoryJuglans nigra 2. American walnut having a very hard and thick woody shell Synonymsblack walnut Related words Word family black walnut tree Broader terms walnut Parts black walnutJuglans Part of black walnut WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
