bore bit(n = noun.artifact) borer, rock drill, stone drill - a drill for penetrating rock;
is a kind of drill
has particulars: cross bit, star drill, straight-fluted drill, straight flute

a bit, bar bit, bit, bit by bit, bit field, bit part, blade bit, bore, brace and bit, canon bit, center bit, centre bit, chamfer bit, check bit, core bit, countersink bit, cross bit, curb bit, drill bit, drilling bit, every bit, expansion bit, expansive bit, fippenny bit, fishtail bit, not a bit, parity bit, pilot bit, rock bit, roller bit, snaffle bit, spade bit, the least bit, tidal bore, twist bit