No doubt about it, the expanding definition poem is probably one of the most obscure and offbeat poetry forms I have ever come across. The first and only time I ever read about it was in a forgotten issue of The American Poetry Review probably sometime in the late 1990s. There doesn’t seem to be a trace of its origin or even existence now anywhere on the internet. It is extremely simple and fun to write, seeming more like a weird writing exercise than an actual poetry form. What makes it so unique is that this form practically writes itself. To begin, all you have to do is choose a single word, any word at all. Then you look up that word in the dictionary and write down its definition. Selecting certain words from that definition, you replace those words with their own definitions. You just keep doing that, substituting words with definitions (editing as much as you like) until you are satisfied with the results. And that’s it, you have written an expanding definition poem!
As an example, here is a poem I wrote expanded from the single word “laundry” when I was asked to give a poetry reading at a local art gallery as part of the opening of a photography exhibit on the colorful clotheslines of Venice, Italy: