WordWeb Online

1. What or which person or persons?
   "who gave you the book?"
    
2. The person or persons that; the one that
   "I'm the one who bought it"

1. A United Nations agency to coordinate international health activities and to help governments improve health services
   - World Health Organization, World Health Organisation [Brit]

Type of: UN agency, United Nations agency

Encyclopedia: Who,What,Where,Ed Who Who, The Who, What, Where, Ed Who, What, When, Where, Wynaut?