Abstract: A cutter for a lawn mower has a rotating disc for mounting on a driving mechanism, the disc having a cavity therein and two openings at diametrically opposite points in the periphery of the disc and opening out of the disc from the cavity. A guide member is provided on the opposite side of the each opening and each pair of opposed guide members defines the opening therebetween. The disc has holes therein inclined outwardly from a surface of the disc other than the periphery and extending into the cavity, one hole being provided adjacent each of the openings. A plurality of flexible wire-shaped cutting members, each having a wire-shaped portion of a flexible material and a stop on one end thereof, extending through the inclined holes and through the cavity and out through the openings and project beyond the periphery of the disc, with the stops against the surface of the disc for preventing the cutting members from being flung outwardly of the disc during rotation thereof.