1) to make to run or flee, put to flight, drive away
 2) to run swiftly in order to catch a person or thing, to run after
    2a) to press on: figuratively of one who in a race runs
        swiftly to reach the goal
    2b) to pursue (in a hostile manner)
 3) in any way whatever to harass, trouble, molest one
    3a) to persecute
    3b) to be mistreated, suffer persecution on account of something
 4) without the idea of hostility, to run after, follow after: someone
 5) metaph., to pursue
    5a) to seek after eagerly, earnestly endeavour to acquire