Cutting insert and cutting tool

A cutting tool comprising a toolholder comprising at least one insert-receiving pocket, the insert-receiving pocket including at least two side abutment surfaces, wherein the cutting tool comprises a cutting insert comprising an insert body having a top surface, a bottom surface, a plurality of side insert supporting surfaces between the top surface and the bottom surface, and a clamping hole including a clamping surface defining at least part of a non-circular, elliptical cone, and a clamp having a clamp surface that is circular in a cross-section taken perpendicular to a longitudinal axis of the clamp surface and is adapted to contact the clamping surface at only two clamp contact points defining outer edges of at least one area of contact between the clamping surface and the clamp such that the two side abutment surfaces and two non-parallel insert supporting surfaces of the plurality of insert supporting surfaces are secured in a contacting relationship, wherein the outer edges of the at least one area of contact are arranged relative to the two non-parallel insert supporting surfaces of the insert supporting surfaces so that components of a force applied to at least the two clamp contact points of the at least one area of contact are adapted to be transmitted simultaneously to the two side abutment surfaces through the two non-parallel insert supporting surfaces of the insert supporting surfaces.