1.NounSomething that abrades; a tool or machine for abrading. .mw-parser-output .defdate{font-size:smaller}
A primitive artifact made of sandstone used for smoothing, sharpening, or shaping.
A surgical instrument used to abrade bone or other tissue.
"a cartilage abrader; a corneal abrader"
2.NounA primitive artifact made of sandstone used for smoothing, sharpening, or shaping.
3.NounA surgical instrument used to abrade bone or other tissue.