look up any word, like fleek:
 
1.
Buttocks, heinie, your arse.
Samantha has a formidable keister.
by The Wog Whomper May 11, 2005
 
2.
to conceal an object in ones rectum.
to keister a sack of cocaine.
by Anthony and Gilbert September 05, 2004
 
3.
1. what you need to get up off of...

2. bulbous enclosure of fat located at the back of the bus, can be used as a floatation device in the event of an emergency.
get off your damn keister and get in the game
by ob1 March 30, 2004
 
4.
1. vi/vt. To hide contraband in one's anus.

2. n. One who hides contraband in his anus.
If you want cigs, see Johnny -- that keister bunny's got a veritable Bodega stashed up there.
by Robbie October 24, 2004
 
5.
keis·ter

Pronunciation: 'kEs-t&r, 'kIs-
Variant(s): also kees·ter /'kEs-/
Function: noun
Etymology: satchel (English slang)
slang : BUTTOCKS
The word is out about town,
That Rock Hudson loved it in the brown;
He eschewed the nubile maids,
And now he has a case of AIDS.

Those who finally got him,
Penetrated his well-rounded bottom.

While down in Tijuana Town, when asked:
"Hey meester! Do you want to fuck my seester?"
Rock replied: "Hell no! Sock it to me in the keister!

-- doggrel, circa 1985
by Nelly Scratch December 06, 2006
 
6.
(also keester, keyster, kiester, or kister)

1. the buttocks

2. a suitcase that opens up into a display of goods

3. a rear pants pocket

4. a safe
He got shot in the keister.
by Light Joker July 21, 2005
 
7.
Use the lower portion of your digestive system as a storage bin for contraband
Carl had to keister a half-kilo of coke in order to clear customs from Columbia.
by Cass July 01, 2005