The metallic card wire (100) includes a rib portion (110) and a plurality of teeth (115). The teeth have a tip segment (117), a front portion (120), a back portion (130), two sides (141, 142) and an interconnection section connecting the back portion of a tooth to the front portion of the previous tooth. The teeth lean in the card wire longitudinal direction. The teeth's front portion leans towards the longitudinal direction. The front portion includes an undercut segment where the included angles of the tangents to the front portion with the longitudinal direction of the card wire are smaller than the included angles of the tangents to the front portion with the longitudinal direction of the card wire between the undercut segment and the tip segment. At least one side of the teeth includes at least a first structural element for increasing the frictional force of fibers relative to the side of the teeth and positioned closer to the tip segment compared to the undercut segment's position.