/ Thesaurus / A Synonyms of alnus rugosa Find synonyms for: Noun1. speckled alder, Alnus rugosa, alder, alder treeusage: common shrub of Canada and northeastern United States having shoots scattered with rust-colored downWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language