Answer: markers

AnswerCrossword Clue
MARKERSChalks
markersA felt-tip pen with a broad tip
markersMARKER, one that marks (to impress or stamp with a sign)
markers(chiefly in soccer) A player who is assigned to mark a particular opponent
markersA thing serving as a standard of comparison or as an indication of what may be expected
markersAn object used to indicate a position, place, or route
markersA radio beacon used to guide the pilot of an aircraft
markersA person who records the score in a game, esp. in snooker or billiards
markersA promissory note; an IOU
MARKERSBuoys, e.g.
MARKERSIOUs
MARKERSLas Vegas i.o.u.'s
MARKERSMilestones.
MARKERSMileposts.
MARKERSSignals at the rear of a train.
MARKERSFelt-tip pens
MARKERSGeneticist's tools
MARKERSPermanent-ink pens
MARKERSIOU's