1. Slender fern of northern North America with shining chestnut-coloured stipes and bipinnate fronds with usually distinct marginal sori
   - Alpine woodsia, flower-cup fern, Woodsia alpina

Type of: woodsia

• sine curve
• sine die
• sine qua non
• sine wave
• sinecure
• sinecurist
• Sinequan
• sinew
• sinewy
• sinfonia
• sinful
• sinfully
• sinfulness
• sing
• sing-kwa
• singable
• singalong
• Singan
• Singapore
• Singapore dollar
• Singapore Island
• Singaporean
• singe
• singer
• Singhalese