gnaw
verb (used with object)
to bite or chew on, especially persistently.
Used to describe actions that started in the past and continue into or have direct relevance to the present.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Nor could they find a bundle in a handkerchief, which they would have gnawn through speedily.
From The Open Air by Jefferies, Richard