IPA: /ˈnɔːər/
KK: /nɔr/
A type of animal, often a rodent, that gnaws or chews on things, especially wood or food.
The gnawer chewed through the wooden furniture, leaving marks all over.
Gnawer → The word is formed from "gnaw" (from Old English "gnagan", meaning to bite or chew) and the suffix "-er" (meaning a person who performs an action). A gnawer is a person or animal that bites or chews something persistently.
Think of someone who is 'biting' ('gnaw') on something repeatedly — that's what a gnawer does.