Zain is Hebrew for "a dick", Ain means "an eye", so literally it will be as in "a dick in one's eye", but is used for expressing a refusal or disappointment.
by Tuk February 20, 2005
From Hebrew, literally means "A dick in an eye", this is actually a call of frustration when somthing bad has happened to you.
by iwwf April 12, 2006