from a compound of πρό and ὁράω; to be a watcher in advance, i.e. to mount guard as a sentinel (post spies at gates); figuratively, to hem in, protect:--keep (with a garrison). Compare τηρέω.
probably another form of βιάζω; to squeeze, i.e. seize (gently by the hand (press), or officially (arrest), or in hunting (capture)):--apprehend, catch, lay hand on, take. Compare πιέζω.