Meaning of MARKER in English

MARKER

■ noun

1》 an object used to indicate a position, place, or route.

↘a distinctive feature or characteristic indicative of a particular quality or condition.

↘ Genetics an allele used to identify a chromosome or to locate other genes on a genetic map.

2》 a felt-tip pen with a broad tip.

3》 Brit. (in team games) a player who marks an opponent.

4》 a person who marks a test or examination.

↘a person who records the score in a game, especially in snooker or billiards.

5》 N. Amer. informal a promissory note; an IOU.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.