It's the melding of two different (even opposite) ideas or images. (Example: warrior, healer; nun, hooker; water, fire.) There's a consistent meter, but no rhyme scheme. The structure is:
4 lines - 1st idea
4 lines - 2nd idea
2 lines - 1st idea
2 lines - 2nd idea
1 line - 1st idea
1 line - 2nd idea
1 line - both are melded into one
I quite like this format, but I made it up, and I'm having difficulty finishing the poem because I'm not certain it's working the way I want it to. Thoughts? Questions?