pivot
noun
a pin, point, or short shaft on the end of which something rests and turns, or upon and about which something rotates or oscillates.
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 eyes made him forget his blistering shoes, and a smile at the door divested his mind of the serrated collar upon which his head had been pivoting for five distracted minutes.
From The Court of Boyville by Orson Lowell