What seperates normal dots from polka dots? Who coined the term? When? Are they in any way dance related?
Here’s some info I found at UselessKnowledge.com:
Looked for other references to back this up but found a lot of people had just cut-and-pasted this article on their own sites 
While we’re at it…what is “polka gauze” (or, I guess, just plain “gauze” as clothing)?