Protection or escorting to guard someone or something from danger; an escort or guard.
要人の護衛のために警察官が同行した。
Police officers accompanied the VIP as bodyguards.
輸送船は護衛艦に守られて航行した。
The transport ship sailed under the protection of escort vessels.
夜道を歩くときは友人に護衛を頼むこともある。
When walking at night, I sometimes ask a friend to escort me.
護衛を付けて重要書類を運ぶ。
They transport important documents with an escort.