Top Definition
Verb :
1. To get with the times or current situation.
2. To be knowledgable on relevent subjects or Current events

1. The opposite of out dated

Misc :
1. Often followed by the word brah.
1. Yo, Grandpa you need to stop livin' in da past and young down.

2. Young down, brah.
by KillaSmooth September 01, 2006
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