I just spent a few minutes hanging around YouTube looking at various dance videos from around the world. My searching stopped at the video featured here of a traditional Bengali wedding dance performed at a henna ceremony. Apparently the performance is not typical for henna ceremonies, but the author of the video still gives props to the dancer and I agree that it is rather lovely.
naach – dance
Web resources for Bangla are few, but you can pick up quite a few words reading (not skimming) through the Wiki and from this Bangalinet site which has a small tutorial on how to write in the script. Beyond those two I’m sure there are others, but as I mentioned above it was like pulling teeth to get this word. With that being said class is dismissed.