black elder blac·kel·der uncommon noun 1. common black-fruited shrub or small tree of Europe and Asia; fruit used for wines and jellies Synonymsbourtreeblack eldercommon elderelderberryEuropean elderSambucus nigra Related words Word family black elderberry Broader terms elder WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.