keep (a) count (of someone or something)

keep (a) count (of someone or something)

To learn and remember how many people or things are present in a given situation. Mr. Smith, will you please keep count of the students as they board the bus? A: "And how many people entered the shop on the day of the robbery?" B: "I don't know, I wasn't keeping count." You'll need to keep count of your taxi rides and meals during the trip so that you can make an accurate expense claim when you're back.
See also: count, keep, someone

keep (a) ˈcount (of something)

know how many there are of something: Make sure you keep count of all the phone calls you make so you can claim the money back later.
See also: count, keep