1. Large deeply rooted fern of worldwide distribution with upright bipinnate compound tufted fronds
   - royal fern, royal osmund, king fern, ditch fern, Osmunda regalis

Type of: flowering fern, osmund

• syndesmosis
• syndetic
• syndic
• syndical
• syndicalism
• syndicalist
• syndicate
• syndication
• syndicator
• syndrome
• syne
• synecdoche
• synecdochic
• synecdochical
• synechia
• Synentognathi
• Synercus
• Synercus caffer
• syneresis
• synergetic
• synergism
• synergist
• synergistic
• synergistically
• synergy