1. to become fatigued or lose energy as one approaches the end of a race, competition, or challenging task
The runner began to tire toward the finish line after running for two hours.
O corredor começou a cansar-se na reta final após correr por duas horas.
2. to weaken or lose momentum in the final stages of an endeavor
The team tired toward the finish of the season and lost several crucial games.
O time cansou-se na reta final da temporada e perdeu vários jogos cruciais.