Prunus dulcis amara pru·nus·dul·cisamara uncommon noun 1. almond trees having white blossoms and poisonous nuts yielding an oil used for flavoring and for medicinal purposes Synonymsbitter almondPrunus dulcis amaraAmygdalus communis amara Related words Broader terms almond tree WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.