wrack
noun
wreck or wreckage.
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.
He had been wracking his brain for a good reason to assign for urging the Inca to appear on the terrace in order to hear the radio.
From The Radio Boys' Search for the Inca's Treasure by Breckenridge, Gerald