Use of a cutting tool for drilling into solid material and for turning work, having a main tool body (4, 6, 10), wherein the main tool body (4, 6, 10) has: a machining portion with a mount for an interchangeable cutting insert; a tool shank, which is designed to be accommodated in a tool mount; and a supporting portion between the machining portion and the tool shank, wherein the cross section of the supporting portion is greater than the cross section of the tool shank, and wherein the supporting portion is designed to butt against an end surface (28a, 28b) of a tool mount (20, 22) when the cutting tool has been clamped in the tool mount (20, 22), wherein the supporting portion has at least one aperture (8a, 8b), preferably at least two apertures, for accommodating a cooling-lubricant nozzle (26a, 26b) of a tool mount, characterized in that the use takes place such that the cutting tool is accommodated, and clamped, in a tool mount with at least one cooling-lubricant nozzle (26a, 26b) so that, when the cutting tool is being clamped in the tool mount, the at least one cooling-lubricant nozzle (26a, 26b) ends up located in an aperture (8a, 8b) and the supporting portion does not come into contact with the at least one cooling-lubricant nozzle (26a, 26b). a main tool body (4, 6, 10), wherein the main tool body (4, 6, 10) has: a machining portion with a mount for an interchangeable cutting insert; a tool shank, which is designed to be accommodated in a tool mount; and a supporting portion between the machining portion and the tool shank, wherein the cross section of the supporting portion is greater than the cross section of the tool shank, and wherein the supporting portion is designed to butt against an end surface (28a, 28b) of a tool mount (20, 22) when the cutting tool has been clamped in the tool mount (20, 22), wherein the supporting portion has at least one aperture (8a, 8b), preferably at least two apertures, for accommodating a cooling-lubricant nozzle (26a, 26b) of a tool mount, characterized in that the use takes place such that the cutting tool is accommodated, and clamped, in a tool mount with at least one cooling-lubricant nozzle (26a, 26b) so that, when the cutting tool is being clamped in the tool mount, the at least one cooling-lubricant nozzle (26a, 26b) ends up located in an aperture (8a, 8b) and the supporting portion does not come into contact with the at least one cooling-lubricant nozzle (26a, 26b). a machining portion with a mount for an interchangeable cutting insert; a tool shank, which is designed to be accommodated in a tool mount; and a supporting portion between the machining portion and the tool shank, wherein the cross section of the supporting portion is greater than the cross section of the tool shank, and wherein the supporting portion is designed to butt against an end surface (28a, 28b) of a tool mount (20, 22) when the cutting tool has been clamped in the tool mount (20, 22), wherein the supporting portion has at least one aperture (8a, 8b), preferably at least two apertures, for accommodating a cooling-lubricant nozzle (26a, 26b) of a tool mount, characterized in that the use takes place such that the cutting tool is accommodated, and clamped, in a tool mount with at least one cooling-lubricant nozzle (26a, 26b) so that, when the cutting tool is being clamped in the tool mount, the at least one cooling-lubricant nozzle (26a, 26b) ends up located in an aperture (8a, 8b) and the supporting portion does not come into contact with the at least one cooling-lubricant nozzle (26a, 26b).