1.
base, headquarters, home base, home ground
The main location from which an organization, team, or person operates. Used for military bases, company headquarters, sports team home stadiums, and any central base of operations.
Usage
本拠地 is used for any main base of operations. In sports, it refers to a team's home stadium or city. In business, it means the headquarters or main office location. In historical and military contexts, it refers to a military base or stronghold.
The shorter form 本拠 is also used, though 本拠地 (with 地, "place") emphasizes the physical location.