holesaw
nounUK /ˈhəʊlsɔː/
US /ˈhoʊlsɔː/
A holesaw is a round tool that cuts big circles in wood or metal.
Dad used a holesaw to make a round hole for the new door handle.
OTHER MEANINGS
2. A saw with a narrow blade used for cutting holes or curves in tight spaces.
The carpenter reached for a holesaw to cut the curved notch.
3. A type of drill bit with a toothed circular edge for boring large-diameter holes.
He fitted a holesaw onto the drill to bore through the panel.
4. Any saw designed specifically for cutting openings in walls or boards.
The electrician used a holesaw to open a gap for the cable.