What is Dahl???

It's vegan  (or can be) and it's Indian, but I just made it with my own ingredients.  Meh who cares, I made my dish even before looking up what dahl is.  I had tasted the dahl made at The Naked Sprout. and decided to see if I could replicate it, without knowing what was in it.  I'm proud to say I'm happy with the results.  Now I just need to find out how off or close I actually was.  I know mine was slightly different because I didn't have any chick peas or lentils left in my house (apparently those are the main ingredient) go figure I make dahl without them..
I used crushed tomatoes, a can of beans, and a can of coconut milk, then I just added sweet potato, carrot, celery, onion, grated zucchini, parsley (I'm not sure why, it just looked so pretty in my fridge I wanted to use it) and curry powder. 

Well it looks weird I must admit, it tasted fine. But I think if I did it again, I would cut back on the tomato and add something to make it sweeter.  I would also steam the sweet potato first and obviously add chick peas and lentils.  It's kind of more like Dahl Soup!