home base in WordNet English dictionary

1. (usually plural) the office that serves as the administrative center of an enterprise
   "many companies have their headquarters in New York"
   headquarters  central office  main office  home office  home base 
   
2. (baseball) base consisting of a rubber slab where the batter stands; it must be touched by a base runner in order to score
   "he ruled that the runner failed to touch home"
   home plate  home base  home  plate