sweep room
n.— «The school also uses what’s called a “sweep room,” where students spend the hour if they’re found wandering the halls after the period bell has rung.» —“Contrary to rumors, it was a normal day at high school” by Jason Miller News-Dispatch (Michigan City, Indiana) Sept. 15, 2006. (source: Double-Tongued Dictionary)
Further reading
David from Matthews, North Carolina, grew up using the term cheese toastie for a type of grilled cheese sandwich. Cheese toasties are familiar in Ohio, Indiana, and Illinois, particularly around the cities of Decatur and Springfield. In the UK...
Matt from Grand Rapids, Michigan, was puzzled when colleagues kept saying someone had stood up at a wedding, indicating that they’d been a member of the wedding party. The expression stood up in that sense is an Americanism going back about two...