noun
second row; lock (rugby)
Rugby term for the two forwards who bind together in the second row of the scrum, also called locks.
彼は大学ラグビー部でセカンドローを務めている。
He plays second row for his university rugby club.
セカンドローはスクラムで重要な役割を果たす。
The second row plays an important role in the scrum.