straight flute(n = noun.artifact) straight-fluted drill - a rock drill with flutes that are straight;
is a kind of bore bit, borer, rock drill, stone drill

champagne flute, fipple flute, flute, flute glass, flute player, go straight, nose flute, put straight, set straight, straight, straight and narrow, straight angle, straight arch, straight arrow, straight chain, straight chair, straight face, straight faced, straight flush, straight hang, straight life insurance, straight line, straight man, straight off, straight out, straight person, straight pin, straight poker, straight razor, straight shooter, straight shooting, straight sinus, straight thrust, straight ticket, transverse flute, vertical flute