My language helper recently showed me the Ekşı Sözlük online dictionary.  A bit like wikipedia, the dictionary allows community members to contribute to the ever expanding list of words as well as changing meaning of words.  It is also a bit of an almanac as you can look up historic dates, names, places and find it all with a bit of the flare that each individual contribute adds to the site.   Here is the 25th entry for the word Genç:

15 - 25 yaşları arasında, kot pantolon altına converse ayakkabı giyen insan. 

What a terrific definition!  Mark it in your favorites and enjoy.