底そこ荷に

noun

ballast

Refers to heavy material placed in the bottom of a ship to improve stability. Also used figuratively for something that provides stability or weight.

• 船ふねは底そこ荷にを積つんで安あん定ていした。

  The ship was stabilized by loading ballast.

• 彼かれの経けい験けんがチームの底そこ荷にとなった。

  His experience served as ballast for the team.