Counterbore

A counterbore drills a wide, flat-bottomed cylindrical recess -- sized to fit a screw head, or a screw head plus a washer, fully below the wood's surface -- as distinct from a countersink, which cuts a conical taper matched to a flat-headed screw's own angled underside. Counterbored holes are deep and wide enough that the recess is often filled afterward with a wood plug, hiding the fastener entirely under a disc of matching (or deliberately contrasting) wood.

Many step-drill bits cut a pilot hole, a clearance hole, and a counterbore in one operation at matched, pre-set depths, since drilling all three separately and keeping them perfectly concentric by hand is fussier than it sounds.