mark·er

[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. 2013.
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00:10
Marker is always a great word to know.
So is slumgullion. Does it mean:
a stew of meat, vegetables, potatoes, etc.
a gadget; dingus; thingumbob.
Collins
World English Dictionary
marker (ˈmɑːkə) [Click for IPA pronunciation guide]
 
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
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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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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Slang Dictionary

marker definition


  1. n.
    a personal promissory note; an IOU. : Bart signed a marker for $3,000 and handed it to Sam.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw Hill.
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Example sentences
Of course, writing in cursive is no more a sign of intelligence than using whom
  correctly, but it was a marker.
The marker papers are examples of competent student writing at each grade level.
It has none of the obvious benefits of that other marker of humanity, language.
Researchers showed that the marker also identifies nerves in human tissue.
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