marker

Universal Words noun 1 [C] an object or a sign that shows the position of sth: a boundary marker * He placed a marker where the ball had landed. 2 [sing.] a ~ (of / for sth) a sign that sth exists or that shows what it is like: Price is not always an accurate marker of quality. * Peter has put down a marker for (= shown that he is committed to) next year as the best time to launch the new product. 3 (BrE also marker pen) a pen with a thick FELT tip 4 (BrE) (AmE grader) a person who marks/grades students' work or exam papers 5 (BrE) (in team games, especially football) a player who stays close to a player on the other team in order to stop them getting the ball