Определение offensive line в Английский Язык Английский Язык словарь
the seven legally obligatory players lined up on the offensive side within a yard of the line of scrimmage
the five players (the center, the two offensive guards and the two offensive tackles) lined up on the middle of the offensive side within a yard of the line of scrimmage
all the offensive players, whether obligatory or not, lined up one yard or less from the offensive line of scrimmage