marker
n.
sign; scorekeeper; symbol that indicates a place reached, milestone; tombstone; felt-tipped pen that usually has a broad tip
Marker
marker (m)
n.
marker, felt-tipped pen that usually has a broad tip; scorekeeper (Sport)
Marker
(n.)
The soldier who forms the pilot of a wheeling column, or marks the direction of an alignment.
(n.)
One who or that which marks.
(n.)
One who keeps account of a game played, as of billiards.
(n.)
An attachment to a sewing machine for marking a line on the fabric by creasing it.
(n.)
A counter used in card playing and other games.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
About
Marker
An identifiable heritable spot on a chromosome. A marker can be an expressed region of DNA (a gene) or a segment of DNA with no known coding function. All that matters is that the marker can be monitored.