What does "over" mean?

In addition to the idioms beginning with over, also see all over (and entries beginning with all over); bend over backward; bind over; blow over; boil over; bowl over; carry over; check on (over); chew the cud (over); cloud over; come over; cross over; crow over; cry over spilt milk; do over; draw a veil over; drop by (over); fall all over; fork over; fuck over; get over; get the advantage of (over); give over; gloss over; go over; hand over; hand over fist; hang over; hash over; have a hold over; have it (all over someone); head over heels; hold over; honeymoon is over; in deep water (over one's head); it's all over with; jump all over; keel over; keep watch (over); kick over the traces; knock for a loop (over with a feather); knock over; lay over; look like death (warmed over); look over; lord it over; lose sleep over; make over; mind over matter; mull over; once over lightly; paper over; party's over; pass over; pick over; pull over; pull the wool over someone's eyes; put over; rake over the coals; ride roughshod over; roll over; roof over one's head; run one's eyes over; run over; scoot over; sign over; sleep over; smooth over; stand over; start over; stop off (over); take over; talk over; think over; throw over; tide over; till hell freezes over; turn in (over) one's grave; turn over; turn over a new leaf; walk all over; watch over; water over the dam; win over; work over.