A SWAT team
A counter, especially one used in card games.
A felt-tipped pen, a marker pen.
Synonym of IOU, an informal record of a debt.
A gene or DNA sequence with a known location on a chromosome that can be used to identify individuals or species.
A substance used as an indicator for diagnosis or other analysis, a biomarker.
A personal favor owed to someone, whether written or not.
A free or bound morpheme indicating a grammatical function.
A sewing machine attachment that creases the fabric to mark a line
Someone who assigns marks on tests, examinations, etc.; a grader.
The soldier who forms the pilot of a wheeling column or marks the direction of an alignment.
The ink marks or residue of a felt-tipped pen.
A scorekeeper, especially one who tallies billiard scores.
A real or virtual objective, something to be aimed for.
A player on defense used to mark one or more offensive players.
A device that fires a paintball.
A formal certification that a company was the first to approach a competition authority to reveal the existence of a cartel, generally entitling it to greater leniency during the cartel's dissolution and punishment.
To mark or write on (something) using a marker