1. South American cavy; possibly ancestral to the domestic guinea pig
   - aperea, Cavia porcellus

Derived forms: wild cavies

Type of: cavy

• silly season
• silo
• siloxane
• Silphium
• Silphium laciniatum
• silt
• silt up
• siltstone
• silty
• Silurian
• Silurian period
• silurid
• silurid fish
• Siluridae
• siluriform fish
• Siluriformes
• Silurus
• Silurus glanis
• silva
• silvan
• Silvanus
• silver
• silver age
• silver ash
• silver beech