A person who has Crohn's Disease. Example: In the IRC network XWorld.org we have a channel called #crohns-colitis where a lot of crohnies hang out and support each other. All of us have Crohn's Disease or ulcerative colitis, a disease similar to Crohn's.
CROHNIE
Meaning of CROHNIE in English
Slang English vocab. Английский сленговый словарь. 2012