expression, godan verb (-su)
try one's strength; test one's ability
Used when someone attempts a challenging task to see what they are capable of, often in a competitive or self-assessment context.
新しいスポーツで力を試してみたい。
I want to try my strength at a new sport.
彼は全国大会で力を試すつもりだ。
He intends to test his ability at the national tournament.