Top Definition
An extreme nerd and band geek.

A person whose smile eats their whole face.
A Katjana is generally seen with huge headphones and a large backpack wandering around.
Average grades, but very good at playing instruments.
Usually, the saxophone or bass clarinet. (This can differ from Katjana to Katjana.)
Teachers do not like them.

Extremely loud.
Please don't turn all Katjana on me.
by Aleyhay June 10, 2011

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