slotter noun 4verb 1forms 3 noun4 •Someone or something that slots (that is, makes slots). •A tool used to make a mortise, or to shape the sides of an aperture. •Such a tool that is much like a shaper but with a smaller ram, vertically mounted. •Filth. verb1 •To make filthy; to foul. formsslottered · slottering · slotters