the.com/keyhole saw

a stabby little blade that punches drywall holes nobody else dares to start

means A narrow, tapering hand saw with a pointed blade designed to cut curves and start holes in tight spots where a full-size saw can't reach.

from A plain compound from 'keyhole' plus 'saw' — named for exactly what it does well: cutting the small, awkward openings like a keyhole. English has called it this since at least the 18th century, and its slim pointed blade also earned it the nickname 'compass saw' for the way it could swing through curves.

pointed tip
sharp enough to plunge straight into a wall
old name
once called a compass saw for tight curves
narrow blade
slim taper lets it pivot inside cuts
drywall favorite
electricians cut outlet holes blind with one
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