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1. can be defined as awesome, wonderful, fascinating, breathtaking and general magnificence.

2. Iðunn is the best and most beautiful thing that you can imagine.
That show was Iðunn!" "IÐUNN" "You look Iðunn tonight
by grasalfr May 08, 2011
An extremly cute and excitable girl. Loves animals and snow. Pretty and fair.
Whoa, thats one Idunn.
by Julin April 30, 2009