to exercise one's talent or ability; to display or put one's skill to use, often actively or proudly
そのシェフは大会で腕を振るい、見事なコース料理を作った。
The chef displayed his skill at the competition and prepared an impressive course meal.
ベテラン選手が最後の試合で腕を振るった。
A veteran player showed his skills in the final match.
祭りでは地元の職人たちが腕を振るって伝統工芸を披露した。
At the festival, local craftsmen displayed their skills and demonstrated traditional crafts.