mark off

(noun) Russian mathematician (1856-1922). Synonyms: Markov, Andrei Markov, Markoff, Andre Markoff.

(verb) set boundaries to and delimit. Synonyms: mark off, mark out. Example: "Mark out the territory."

(verb) put a check mark on or near or next to. Synonyms: check, check off, mark, mark off, tick off, tick. Examples: "Please check each name on the list." "Tick off the items." "Mark off the units."