A website where people are supposed to put definitions for internet slang or any slang, but is instead used to write down butthurt comments or strong opinions about the topic instead of a legitimate definition.
Person 1: What does emo mean?
Person 2: I dunno, we should search it on Urban Dictionary.
Person 3: No no, guys. Urban Dictionary is shit. Just ask actual people for a definition.
Person 1 and 2: Thanks!
-Hey dude,what does "placebo" mean?
-I don't know,search on urban dictionary 1 minute later...
-What's the meaning of "placebo" according the UD?
-sexual act where...
Website that lets viewers of the site post their own words and definitions for people of the internet to see. This site is used to usually hate on groups,other people or other things, or make jokes that have absolutely no relevance to the words meaning. The website is good for trying to find out what some words used by everyone at school mean, such as "thot" or "light skinned". Basically, Urban Dictionary is good website for not looking like an idiot for not knowing the latest trends, but is also the destination for many trolls, but that still doesn't stop it from being a great website.