1. Set, mark, or draw the boundaries of something
   "The treaty demarked the new borders between the countries";
   - demarcate, delimit, delimitate
    
2. Separate clearly, as if by boundaries
   "The researcher demarked the different stages of child development";
   - demarcate

Derived forms: demarked, demarking, demarks

Type of: bound, confine, differentiate, distinguish, limit, restrict, secern [rare], separate, severalise [Brit, rare], severalize [rare], tell apart, throttle, trammel

Encyclopedia: Demark