Definitions

1. verb

to gnaw at something, especially in a persistent or nagging way

“The worry began to begnaw at her peace of mind.”

2. verb

to gradually wear away or weaken something

“The wind began to begnaw at the stones of the ancient castle.”

3. verb

to gnaw or wear away at something, especially with a persistent or nagging action

“The cold began to begnaw at his fingers.”