follow up - definition of follow up by The Free Dictionary
fol·low (fŏl′ō) v. fol·lowed, fol·low·ing, fol·lows v.tr. 1. a. To come or go after; proceed behind: Follow the usher to your seat. ... Old man Denny, hall room, fourth floor back, who sat on the lowest step, trying to read a paper by the street lamp, tur...