noun
base; stronghold; main fort
Military term for a main base or stronghold; not used for everyday 'base' like a foundation or starting point.
敵の本塁を攻める作戦が立てられた。
A plan to attack the enemy's stronghold was drawn up.
noun
Baseball term; the final base a runner must reach to score a run.
ランナーが本塁に滑り込んだ。
The runner slid into home plate.