Wiktionary
mills around
vb. (en-third-person singularmill around)
Usage examples of "mills around".
Everyone mills around before the cavern's maw, carrying their hardhats in their hands, as no one wants to be the first to put his on and look stupid.
He's always hard-working and very busy, as opposed to Greg, who uses the Internet sometimes, and mills around smartly so people think he's busy.
Rufus Tuney, a grain merchant with six critically located mills around the city, grimaced, then waved a hand somewhat languidly.