Marker

[mahr-ker] /ˈmɑr kər/

noun
1.
a person or thing that marks.
2.
something used as a mark or indication, as a bookmark or tombstone.
3.
a person who records the scores, points, etc., as in a game or contest.
4.
a counter used in card playing.
5.
Genetics. .
6.
Psychology. an object, as a book or topcoat left at a library table, used to establish territorial possession in a public place.
7.
Linguistics.

8.
a small radio beacon, automatically operated, used for local navigation of vessels.
9.
.
10.
Also called marker pen, marking pen. a pen designed for making bold, colorful, or indelible marks, as in making signs or identifying objects.
11.
Slang.

12.
Also called marker crude. Commerce. a grade of oil on which prices of other crude oils are based.
13.
Citizens Band Radio Slang. one’s location while driving on a highway, as determined by the nearest milepost.
/ˈmɑːkə/
noun
1.

2.
a person or thing that marks
3.
a person or object that keeps or shows scores in a game
4.
a trait, condition, gene, or substance that indicates the presence of, or a probable increased predisposition to, a medical or psychological disorder See biological marker, genetic marker, medical marker
n.

Old English mearcere “writer, notary” (glossing Latin notarius “clerk”), literally “one who marks,” agent noun from mark (v). Not found again until late 15c., hence modern use is perhaps a separate formation. Meaning “monument stone” is from 1888. Meaning “felt-tipped marker pen” is from 1951, so called because their purpose was to “highlight” text.

marker mark·er (mär’kər)
n.

noun