marker [ˈmɑ:kə(r)]

以下由轻松背单词网站提供

n.标记，作记号的人，记分员，书签，纪念碑，里程碑，标识物，指示物

a sign which shows where something is

Step out ten feet and then put a marker in the ground.步测十英尺，然后在地上做出标记。
The post served as a bound-ary marker.这个哨站用作标界。