1. A young unmarried woman
   "The knight vowed to rescue the demoiselle in distress";
   - damsel, damoiselle [archaic], damosel, damozel [archaic]
    
2. Small brilliantly coloured tropical marine fishes of coral reefs
   "demoiselle are known for their territorial behaviour and vibrant colours";
   - damselfish

Derived forms: demoiselles

Type of: maid, maiden [archaic], percoid, percoid fish, percoidean

Part of: family Pomacentridae, Pomacentridae

Encyclopedia: Demoiselle