This is the 4214th most frequent German word.
besiegt
"Besiegt" means "defeated."
In this sentence, 'besiegt' is used as a verb in the perfect tense to indicate that someone has achieved victory over another party.
Er hat seinen Gegner besiegt.
He defeated his opponent.
Here, 'besiegt' is used as an adjective to describe the state of the subject after being overcome or conquered.
Nach einem langen Kampf war er endlich besiegt.
After a long battle, he was finally defeated.
In this instance, 'besiegt' is in the passive voice, indicating that the subject (the team) was overcome by the action of another entity.