Noun: royal fern roy-ul furn
- Large deeply rooted fern of worldwide distribution with upright bipinnate compound tufted fronds
"Royal ferns can grow up to six feet tall in wetland areas";
- royal osmund, king fern, ditch fern, French bracken, Osmunda regalis
Derived forms: royal ferns
Type of: flowering fern, osmund
Encyclopedia: Royal fern