Abstract: A rotor and cutting line for flexible-line vegetation cutters such as lawn trimmers, include a disc-shaped body having a central portion thereof connected with the drive shaft of the trimmer for bodily rotating the head. At least one entry and one exit opening are in the head with the exit opening positioned substantially radially through a peripheral portion of the body, and the openings are communicatively joined by an elongate passageway which extends within the body and has curvilinear or non-linear portion for engaging the cutting line. A flexible cutting line having a free end and another end portion having a portion larger than the entrance opening, is threaded through the openings and the elongate passageway, such that the enlarged end portion of the flexible line is disposed adjacent to and outwardly of the entrance opening, abuttingly engages the body and cooperates with the engagement of the line and passageway surfaces to removably secure the same within the rotor head.