chief

Adjective

• most important element
  • the chief aim of living
    
  • the main doors were of solid glass
    
  • the principal rivers of America
    
  • the principal example
    
  • policemen were primary targets
    
  • the master bedroom
    
  • a master switch
    

Noun

• the head of a tribe or clan

• a person who exercises control over workers
  • if you want to leave early you have to ask the foreman
    

• a person who is in charge
  • the head of the whole operation
    

Related words

• Synonyms: 
  chief(a) , main(a) , primary(a) , principal(a) , master(a) , headman , tribal chief , chieftain , foreman , gaffer , honcho , boss , head , top dog