1.Tablets of the popular party drug 'ecstasy'
2.Americans call it ex
's trippin on eccies
short for ecstasy
"take some eccy, it'll be madcore"
Slang term for MDMA (3,4-methylenedioxy-N-methylamphetamine) which causes users to drink water, touch themselves and dance like a prick. You can tell someone has ingested such substance by the pupils looking like big black plates , they look as though they are trying to eat their face and they are excessively sweating like a rapist in a brothel. The term "eccy" is more commonly used in Scotland and northern parts of Britain.
"I just gubbed an eccy and I'm heading to The Arches" said a very out it Glaswegian 20 year old