Definition of "circus tent" []

• A canvas tent to house the audience at a circus performance (noun)

WordNet. Princeton University. 2010.

• "Armstrong was flying CAP that day, but Wam Mackey’s division Cheshire, Rickelton, and Kramer was involved, and Mackey remembers the flak being so heavy over the target that “it looked like someone had pulled a circus tent open and all these balloons of antiaircraft fire were coming up out of it.”"