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1 definition by Brian Ó Sullivan

 
1.
a south dublin word for yum, tasty or delectable. Usually used with respect of food, and not parts of the female body.

yenu derives from a Swedish-Irish language mix found only in certain areas of South Dublin (post codes 4,6,8,12 and 14 also rumoured to have been heard as far south as 18, but these reports are questionable.).
nice apple, yenu.
Yenu, ice-cream
by Brian Ó Sullivan January 22, 2008