look up any word, like the eiffel tower:
1.Something that you really love doing, like a hobby that holds you together or relieves you from stress.
2. Anything and everything

This is a made up word, but a convenient one. It's a little silly. Insert anywhere when you're too frustrated to think of any better word.
1. Alex: I need my ishness! *scrambles around frantically for her drawing tablet*
2. Aagh, stupid <insert name> and their retarded fucking..ishnss! >_<
by Voodoo Squash June 23, 2004