The Collaborative International Dictionary of English v.0.48:
ain \ain\ adj.
1. belonging to or on behalf of a specified person especially
one's self; preceded by a possessive. `my ain' is Scottish
Syn: own(prenominal).
[WordNet 1.5]
WordNet (r) 3.0 (2006):
ain
adj 1: belonging to or on behalf of a specified person
(especially yourself); preceded by a possessive; "for
your own use"; "do your own thing"; "she makes her own
clothes"; "`ain' is Scottish" [syn: own(a), ain]
V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):
AIN
Advanced Intelligent Network (IN)
V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):
AIN
Auto Insert Notification (CD-R)
Hitchcock's Bible Names Dictionary (late 1800's):
Ain, same as Aiath