marker
/ˈmɑːkə(r)/noun
1
- an object used to indicate a position, place, or route标识, 标志; 指示牌：
they erected a granite marker at the crash site
他们在坠毁地点树立花岗岩纪念牌
as modifier a marker post.标志杆。
1.1
- in sing. a distinctive feature or characteristic indicative of a particular quality or condition（性质或状况的）标志：
identification with one's own language has always been a marker of nationalism.
对本族语的认同从来就是一种民族主义的标志。
1.2
- a thing serving as a standard of comparison or as an indication of what may be expected参照标准：
he has already laid down a marker by setting a fast time during practice.
他已经在练习中达到高速从而已经定下了参照标准。
1.3
- Genetics an allele used to identify a chromosome or to locate other genes on a genetic map【遗传】标志基因。
1.4
- a radio beacon used to guide the pilot of an aircraft无线电导航信标。
1.5
- N. Amer. informal a promissory note; an IOU.〈北美, 非正式〉本票; 借据。
2
- （亦作marker pen）a felt-tip pen with a broad tip记号笔。
3
- a player in a team sport who stays close to a particular opponent to prevent them from getting or passing the ball（体育比赛）盯人队员。
4
- a person who assesses the standard of a written test or examination打分员, 评卷员, 阅卷人。
4.1
- a person who records the score in a game, especially in snooker or billiards（比赛, 尤指斯诺克或台球）记分员。