Basically where you currently are. It's a dictionary written by people and like with understandable meanings and you don't have to search for words and words to know the meaning of one word until you forget about what even was the word.
A suspicious website that got fucking infested with lame porn jokes and you can't escape hungry milfs writing about words and phrases that no one uses anymore.
Why are you searching this? YOU ARE ON THE FCKING SITE-
Urban Dictionary is an online dictionary that people submit entries onto to explain things jokingly, genuinely or urbanly.