Top Definition
a girl who's nice sweet and really really cute. also a good nickname for girls who's names start with a day and girls who bring daylight into your life.
you:hi dayday
girl: hi
by cybeR15 April 26, 2013

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1. A nap
2. Antonym of night night
Mum: It's time for your day day Jonny
Jonny: Day day mummy
by JB42 October 09, 2011

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a slootface
by brolic October 16, 2003

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a lazy ass hoe that can't get a licences so she give bj's to vatos for a ride.
"Damn. Let's go holla at that Dayday."
by shinnin September 07, 2006

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