MARKER

marker. Marker, n. one who marks, one who takes notice

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Mark″er (?), n. One who or that which marks. Specifically: (a) One who keeps account of a game played, as of billiards. (b) A counter used in card playing and other games. (c) (Mil.) The soldier who forms the pilot of a wheeling column, or marks the direction of an alignment. (d) An attachment to a sewing machine for marking a line on the fabric by creasing it.