Piston, crank drive and reciprocating internal combustion engine

A piston (201), in particular for an engine, having an upper side (203), a lower side (207), a circumferential surface (205) running along a circumference and an axis of movement (281) running essentially parallel to a tangent of the circumferential surface (205) and through the upper side (203) and through the lower side (207), the circumferential surface (205) being used to guide the piston (201) in a cylinder bore of a cylinder along the axis of movement (281), the upper side (203) being designed for absorbing compressive forces of a gas and the underside (207) having a connecting rod holder (210), wherein the connecting rod holder (210) has an undercut (211) or a plurality of undercuts in a tension and a compression direction, so that the connecting rod holder (210) is configured to receive a head portion (303) of a connecting rod (301) which corresponds to the connecting rod holder (210) in a form-locking manner and wherein the piston can pivot relative to the connecting rod head portion about a pivot axis (183), the piston (201) having any number of substantially flat cross-sectional surfaces (271, 273, 275) arranged radially through the axis of movement (281), substantially planar cross-sectional surfaces (271, 273, 275) extending radially through the axis of movement (281), characterized in that the piston (201) is shaped in such a way that a radially arranged substantially planar first cross-sectional surface (271, 273, 275) extending through the axis of movement (281) and a radially arranged substantially planar second cross-sectional surface (271, 273, 275) extending through the axis of movement (281) have a cross-sectional area differing from one another by less than 10%.