topple
verb (used without object)
to fall forward, as from having too heavy a top; pitch; tumble down.
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The congregation gave one groan, and then an outcry as if the roof of the kirk had been toppling over their heads.
From Recreations of Christopher North, Volume I (of 2) by John Lyde Wilson