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4.
Code name for taking off a day of work or "working from home" in order to have intimate relations with a same sex partner at home.
I’m getting my front door painted and it needs to sit “ajar” for six hours after. This actually means that " I plan on getting jiggy with my same sex lover for 6 long hours.
by Websters1 July 18, 2006
 
1.

Partially open, neither shut nor wide open.


They left the door ajar.
by Jafje August 11, 2007
 
2.
when something is really funny and you can't stop laughing.
"remember when so-and-so did such-and such? THAT was a jar!
by ktothat May 14, 2010
 
3.
AJAR is name for TTPCom's Application Platform for mobile (cellular) devices. It provides a user interface tool for handset developers, but also provides most of the applications needed to run a handset, including programs for spell checking, WAP browsing and camera/video applications.
You will find handsets using AJAR starting to come out at the end of 2006 and beyond.
by pmjd May 08, 2006