What does ajar mean?
The definition of ajar
A*jar”, adv.
Etym: [OE. on char ajar, on the turn; AS. cerr, cyrr, turn, akin to G. kehren to turn, and to D. akerre. See Char.]

Slightly turned or opened; as, the door was standing ajar.

A*jar”, adv.
Etym: [Pref. a- + jar.]

In a state of discord; out of harmony; as, he is ajar with the world.