Available Definitions:
1) n. - One who or that which marks.
2) n. - One who keeps account of a game played, as of billiards.
3) n. - A counter used in card playing and other games.
4) n. - The soldier who forms the pilot of a wheeling column, or marks the direction of an alignment.
5) n. - An attachment to a sewing machine for marking a line on the fabric by creasing it.