1to strike down or knock over; to defeat someone (physically or in competition).
彼は一撃で敵を打ち倒した。
He knocked the enemy down with a single blow.
強風で古い看板が打ち倒された。
An old sign was knocked over by the strong wind.
チームは最後のプレーで相手を打ち倒して勝利をつかんだ。
The team defeated the opponent with the final play and took the victory.