Longman Dictionary of Contemporary English homepage

marker

noun
     
Related topics: Daily Life, Technology
mark‧er [countable]
1 an object, sign etc that shows the position of something:
He buried the bodies in a single grave with a wooden cross as a marker.
2 something which shows that a quality or feature exists or is present [= mark]
marker of/for
antibodies which are a marker of hepatitis
the use of slang as a marker of social identity
3 also marker pen British EnglishDT a large pen with a thick point made of felt, used for marking or drawing things Magic Marker
4

put/lay/set down a marker

British English to say or do something that clearly shows what you will do in the future

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