n.[C]

1. 记号笔，马克笔；记分员；记分装置
2. （网球场等的）划线装置
3. 书签
4. 标识，标志
   a boundary marker

   界标

5. 纪念碑；墓碑；里程碑

n.

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.