forced labor, use as servant

役 is composed of 彳 (step with the left foot) and 殳 (bludgeon). 彳 visually depicts a road, carrying the meaning of walking or traveling, while 殳 depicts holding a weapon, carrying the meaning of compelling or driving someone forward. 役 conveys compelling someone to travel far away, with its original meaning referring to guarding the borders. Since border guard duty was a harsh hardship that few would volunteer for, 役 extended to represent forced labor, compulsory service, or being drafted into service.