1. A promiscuous or disreputable woman
   "The novel portrayed the character as a roundheel, much to the scandal of its Victorian readers";
   - jade [archaic, informal], loose woman [informal], fornicatrix [informal]
    
2. A sexually loose woman
   "The old-fashioned novel referred to the character as a roundheel";
   - prostitute, fornicatrix [informal]

Derived forms: roundheels

Type of: adult female, adulterer, cyprian [archaic, informal], prostitute [informal], prozzie [slang], trull [archaic], wench [archaic], woman