These include: The twirl or spin when meeting partner on a grand right and left ready to start a promenade; the twirl sometimes done by a lady at the end of a swing (hopefully not into a left allemande!); and the twirl done at home at the finish of a promenade. These twirls are of different character depending upon region of the country and the inclination of the dancers.
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.