Meaning of MARKER in English

MARKER

mark ‧ er /ˈmɑːkə $ ˈmɑːrkər/ BrE AmE noun [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 SYN 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 English ) 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

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.