1. Styrax of southwestern United States; a threatened species
   - Texas snowbells, Styrax texana

Type of: styrax

• siege of Vicksburg
• siege of Yorktown
• Siege Perilous
• Siegfried
• Siegfried line
• siemens
• sienna
• sierra
• Sierra Leone
• Sierra Leone monetary unit
• Sierra Leonean
• Sierra lodgepole pine
• Sierra Madre Occidental
• Sierra Madre Oriental
• Sierra Nevada
• Sierra Nevada Mountains
• Sierra plum
• Sierra redwood
• sies
• siesta
• Sieur de LaSalle
• sieva bean
• sieve
• sieve out
• sieve tube