Rotary - traffic circle. And in Massachusetts, those in the rotary have the right of way.

Yes, but don't put too much faith in that. Reminds me of the old cartoon - visitor being shown around the hospital, guide points into a large multi-bedded room and says "...and this ward is for the people who had the right of way."

Re dungarees: I thought that was a word from the American West. Thick and extremely strong cloth, no bib (those are "coveralls" though they could still be made out of dungaree cloth/denim), and the name came from their use while mucking out the barn...