What does "off" mean?

In addition to the idioms beginning with off, also see back off; bad off; beat off; beat the pants off; beg off; be off; better off; bite off more than one can chew; bite someone's head off; blast off; blow off; blow off steam; blow the lid off; bore to death (the pants off); branch off; break off; bring off; browned off; brush off; bug off; bump off; burn off; buy off; buzz off; call off; cap it all (off); carry off; cart off; cast off; change off; charge off; check off; cheesed off; chip off the old block; choke off; clear out (off); come off; come off it; cool down (off); cool off; count off; cry off; cut off; cut off one's nose; dash off; day off; die off; doze off; drop off; dust off; ease off; easy as pie (rolling off a log); fall away (off); fat of the land, live off the; fight off; fire off; first off; fish or cut bait (shit or get off); fly off the handle; fob off; fuck off; get off; get off on; get off one's tail; get off the dime; get off the ground; give off; give the shirt off one's back; go off; go off the deep end; goof off; hands off; hats off to; haul off; have it (off); head off; high off the hog; hit it off; hold off; hot off the press; jerk off; jumping-off place; keep off; kick off; kill off; kiss off; knock it off; knock off; knock someone's block off; knock the socks off; laugh off; lay off; lead off; leave off; let off; level off; lift off; like a chicken with its head cut off; like water off a duck's back; load off one's mind; log in (off); make off; mouth off; nod off; no skin off one's nose; on (off) camera; on (off) duty; on the (off) chance; pack off; pair off; palm off; pants off; pass off; pay off; peel off; pick off; piss off; play off; polish off; pull off; push off; put off; put someone off; quick off the mark; rake off; rattle off; right away (off); rip off; round off; rub off; run away (off); run off; run off at the mouth; run off with; rush off one's feet; seal off; see someone off; sell off; send off; set off; shake off; shoot off one's mouth; show off; shrug off; sign off; slack off; slip out (off); sound off; spin off; split one's sides (laugh one's head off); sponge on (off); square off; squeeze off; stand off; stave off; stop off; straight off; swear off; switch on (off); tail off; take off; take off after; take the edge off; take up where one left off; talk someone's arm off; taper off; tear off; tee off; tell off; tell someone where to get off; throw off; trade off; wipe off the map. Also see under on.