A cutting tool for chip removing machining of workpieces, wherein the cutting tool is a milling tool, the cutting tool comprising a body and at least one cutting insert adapted to be mounted in an insert seat of the body , the body having a front end , a rear end , and a peripheral side surface extending between the front end and the rear end , the insert seat being provided at the front end and being formed in a transition between the front end and the peripheral side surface , the cutting insert and the insert seat sharing a common central axis (C 1 ) when the cutting insert is mounted in the insert seat , wherein the cutting insert has a circular basic shape and comprises: - a rake surface , - a bottom surface opposite to the rake surface , - a side surface extending between the rake surface and the bottom surface , - a cutting edge formed in a transition between the side surface and the rake surface , and - at least one anti-rotation stopping indent comprising a first stop surface , wherein the insert seat of the body comprises: - a bottom support surface configured to abut and support the bottom surface of the cutting insert , - a side wall comprising at least one side support surface configured to abut and support the side surface of the cutting insert , - at least one anti-rotation stop protruding with respect to the side wall and comprising a second stop surface , and - a concavely curved first duct separating the second stop surface from the side wall , when seen in a section taken perpendicularly to the common central axis (C 1 ), an angle (α) of less than 180° is being formed between a tangent to the second stop surface and a tangent to the first duct at a transition between the second stop surface and the first duct , wherein the at least one anti-rotation stop is adapted to inhibit rotation of the cutting insert in the insert seat about the common central axis (C 1 ) by contact between the first stop surface and the second stop surface , characterized in that the at least one anti-rotation stopping indent is formed in a transition between the bottom surface and the side surface and the second stop surface is completely located within the anti-rotation stopping indent when the cutting insert is mounted in the insert seat . - a rake surface , - a bottom surface opposite to the rake surface , - a side surface extending between the rake surface and the bottom surface , - a cutting edge formed in a transition between the side surface and the rake surface , and - at least one anti-rotation stopping indent comprising a first stop surface , - a bottom support surface configured to abut and support the bottom surface of the cutting insert , - a side wall comprising at least one side support surface configured to abut and support the side surface of the cutting insert , - at least one anti-rotation stop protruding with respect to the side wall and comprising a second stop surface , and - a concavely curved first duct separating the second stop surface from the side wall , when seen in a section taken perpendicularly to the common central axis (C 1 ), an angle (α) of less than 180° is being formed between a tangent to the second stop surface and a tangent to the first duct at a transition between the second stop surface and the first duct , <EOS>