Top Websites for jargon

bgjargon.com

Dictionary of slang, jargon, and outdated words

urbanup.com

Define words and phrases with user-submitted definitions.

wordspy.com

A dictionary of neologisms and jargon.

plainenglish.co.uk

Fighting for plain English in public communication.

foldoc.org

Free on-line dictionary of computing terms and definitions.

urbandictionary.network

Define words, phrases, and slang terms.