1. The initial or opening stage of a competition, tournament, or series of events
He was eliminated in the first round of the championship.
Ele foi eliminado na primeira rodada do campeonato.
2. The first set of negotiations, discussions, or talks
The first round of peace talks concluded without agreement.
A primeira rodada de negociações de paz terminou sem acordo.
3. In boxing or fighting sports, the opening period of a match
The boxer knocked out his opponent in the first round.
O boxeador nocauteou seu oponente na primeira rodada.