1. Of or relating to birds of a particular region or period
   - avifaunistic

See also: avifauna

• sickle-cell disease
• sickle-shaped
• sicklebill
• sicklepod
• sickleweed golden aster
• sickly
• sickness
• sickness benefit
• sicko
• sickroom
• Sid Caesar
• Sida
• Sida hermaphrodita
• Sida rhombifolia
• Sida spinosa
• Sidalcea
• Sidalcea malviflora
• Siddhartha
• Siddons
• side
• side by side
• side chain
• side chair
• side chapel
• side dish