noun
first person to do something; person going first
Refers to the individual who acts first in a sequence, such as the first speaker, first performer, or first to attempt something.
会議では、彼が一番手で意見を述べた。
At the meeting, he was the first person to give his opinion.
じゃんけんで一番手になっ
Since I became the first person in rock-paper-scissors, I started the game first.
noun
first place; top position; person in the lead
Used in competitive contexts like sports, business rankings, or any situation where someone holds the leading position.
彼はマラソンで一番手を走っている。
He is running in first place in the marathon.
この業界では、あの会社が一番手だ。
In this industry, that company is the top player.