The disclosure relates to a transverse segment (33) for a drive belt with a carrier ring and with a plurality of these transverse segments (33) that are placed slideably on the carrier ring, which transverse segments (33) are provided with main body surfaces (38, 41), where between the transverse segment (33) extends in thickness direction, one main body surface (38) being provided with a rocking edge (42) that defines a transition between an upper side and a tapered lower side of the transverse segment (33) with a lowermost edge (34). The lower side of the transverse segment (33) includes at least one opening (44) and at least an upper, radially outward limiting boundary surface (46) of the opening (44) is provided with an undulating shape, i.e. is provided with multiple protrusions (47) that protrude generally towards the lower, radially inward limiting boundary surface (46) of the opening (44).