silver sage sil·ver·sage uncommon noun 1. low much-branched perennial of western United States having silvery leaves; an important browse and shelter plant Synonymssilver sagesilver sagebrushgray sageSeriphidium canumArtemisia cana Related words Word family silver sagebrush Broader terms sagebrush Parts Seriphidium WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.