A drill comprising: a rake face ; a negative land continuous to the rake face ; a flank face continuous to the negative land ; and an outer circumferential surface continuous to the rake face , the negative land , and the flank face , wherein a ridgeline between the rake face and the negative land constitutes a lower cutting edge , a ridgeline between the flank face and the negative land constitutes an upper cutting edge , when viewed in a direction along a rotation axis (A) of the drill , the negative land includes a first region (13a1) in which a space (W) between the upper cutting edge and the lower cutting edge becomes wider toward the outer circumferential surface , and a second region (13a2) which is continuous to the first region (13a1) and in which the space (W) becomes wider toward the rotation axis (A), in a cross section perpendicular to the rotation axis (A), the rake face includes a return face , the return face being recessed opposite to a rotation direction (R) of the drill , when a first boundary represents a boundary between the outer circumferential surface and the first region (13a1) and a second boundary represents a boundary between the first region (13a1) and the second region (13a2), a length (L1) of the first boundary is larger than a length (L2) of the second boundary in a direction parallel to the rotation axis (A), and the second boundary is continuous to the return face , characterised in that the return face is continuous to the outer circumferential surface . a rake face ; a negative land continuous to the rake face ; a flank face continuous to the negative land ; and an outer circumferential surface continuous to the rake face , the negative land , and the flank face , wherein a ridgeline between the rake face and the negative land constitutes a lower cutting edge , a ridgeline between the flank face and the negative land constitutes an upper cutting edge , when viewed in a direction along a rotation axis (A) of the drill , the negative land includes a first region (13a1) in which a space (W) between the upper cutting edge and the lower cutting edge becomes wider toward the outer circumferential surface , and a second region (13a2) which is continuous to the first region (13a1) and in which the space (W) becomes wider toward the rotation axis (A), a first region (13a1) in which a space (W) between the upper cutting edge and the lower cutting edge becomes wider toward the outer circumferential surface , and a second region (13a2) which is continuous to the first region (13a1) and in which the space (W) becomes wider toward the rotation axis (A), in a cross section perpendicular to the rotation axis (A), the rake face includes a return face , the return face being recessed opposite to a rotation direction (R) of the drill , when a first boundary represents a boundary between the outer circumferential surface and the first region (13a1) and a second boundary represents a boundary between the first region (13a1) and the second region (13a2), a length (L1) of the first boundary is larger than a length (L2) of the second boundary in a direction parallel to the rotation axis (A), and the second boundary is continuous to the return face , characterised in that the return face is continuous to the outer circumferential surface . <EOS>