1. Aquatic fern of tropical America often used in aquariums
   - floating fern, water sprite

Type of: aquatic fern, water fern

Part of: Ceratopteris, genus Ceratopteris

• so far
• so long
• so much
• so that
• so there
• so to speak
• so what
• so-and-so
• so-called
• so-so
• soak
• soak through
• soak up
• soakage
• soakaway
• soaked
• soaker
• soaking
• soaking up
• soap
• soap bubble
• soap dish
• soap dispenser
• soap film
• soap flakes