Top Definition
Longer than a power nap, shorter than a proper sleep.
30min<nanna nap<2hours
Gosh I loved that nanna nap
by Chris Really Smells September 14, 2010
A short lie-down in the afternoon. Beloved of grandmothers and anyone who doesn't have an exciting enough life to take a disco nap.
I was so tired this afternoon that I needed a nanna nap even though I don't have a big night out planned!
by jumbelina August 16, 2006

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