Marking-pen

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marker

[mahr-ker]
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. genetic marker.
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.
a.
an element of a construction, as a coordinating conjunction, that is not a part of either immediate constituent.
b.
an element that indicates the grammatical class or function of a construction.
8.
a small radio beacon, automatically operated, used for local navigation of vessels.
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.
a.
a debt, especially a gambling debt.
b.
a written or signed promise to pay a debt, especially a gambling debt; a promissory note or IOU.
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.

Origin:
1480–90; mark1 + -er1

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
marker (ˈmɑːkə)
 
n
1.  a.  something used for distinguishing or marking
 b.  (as modifier): a marker buoy
2.  a person or thing that marks
3.  a person or object that keeps or shows scores in a game
4.  biological marker genetic marker See medical marker a trait, condition, gene, or substance that indicates the presence of, or a probable increased predisposition to, a medical or psychological disorder

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

marker
O.E. mearcere "one who marks;" see mark (-). Meaning "felt-tipped marker pen" is from 1951, so called because their purpose was to "highlight" text.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

marker mark·er (mär'kər)
n.

  1. One that marks or serves as a mark.

  2. A physiological substance, such as human chorionic gonadotropin or alpha-fetoprotein, that may indicate disease when present in abnormal amounts in the serum, as that caused by a malignancy. Also called biomarker.

  3. A genetic marker.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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