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