fraise

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fraise

(frāz),
A burr in the shape of a hemispherical button with cutting edges, used to enlarge a trephine opening in the skull or to cut osteoplastic flaps; the smooth convexity of the button prevents injury to the dura.
[Fr. strawberry]

fraise

[frāz]
Etymology: Fr, strawberry
a smooth hemispheric or conic burr with cutting edges. It is used for enlarging trephine openings or cutting osteopathic flaps.

fraise

A permutation of a drill bit that is tapered or cylindrical, used in surgery to increase the size of burr holes in the skull.