一いち人にん当とう千せん

also: いちにんとうぜん

Meanings

1

being a match for a thousand

yojijukugo (four-character idiom)

A yojijukugo describing a warrior so strong they can fight a thousand enemies alone. Used in historical or dramatic contexts.

彼かれはまさに一いち人にん当とう千せんの豪ごう傑けつだった。
He was truly a hero who could take on a thousand.
戦せん国ごく時じ代だいには一いち人にん当とう千せんと称しょうされる武ぶ将しょうが何なん人にんもいた。
During the Warring States period, there were many commanders said to be a match for a thousand.