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1.
The German word tooth, this is someone who has a great smile and can also describe a great smile.
"Did meet Daniel yet"
"Yeah he had such a great Zahn"

"Have you seen John"
"Yes, he is such a Zahn"
by the_real_deal March 23, 2013
 
2.
A common nickname for a homosexual who is good with numbers or in the accounting field.
"Jim is becoming a great hardworking Zahn."
by Battery Operated December 10, 2009
 
3.
When 2 guys crossfire each other and blow on each other's stomach
"Man, you Zahned me good last night, lets do it again!"
by Zahnnerr September 19, 2008