v. phr. To know about changes; stay informed or up-to-date; keep a count or record. What day of the week is it? I can't keep track. Usually used with "of". Mr. Stevens kept track of his business by telephone when he was in the hospital. The farmer has so many chickens, he can hardly keep track of them all.
Compare: IN TOUCH, KEEP UP 3 .
Antonym: LOSE TRACK.