mower UK /ˈməʊ.ə(ɹ)/US /ˈmoʊ.ɚ/ noun4 •A lawnmower, a machine used to cut grass on lawns. •A farm machine used in hay production (sickle mower, finger-bar mower). •A person who cuts grass.They especially liked to be with the mowers in the hay-making season, seating themselves, greatly to their satisfaction, on the long thick branch of a maple-tree, among the dense foliage. — 1828 •One who mows (makes grimaces). formsmowers