1. mothball - Noun
2. mothball - Verb
a small sphere of camphor or naphthalene used to keep moths away from stored clothing
put into long-term storage
Source: WordNetAnd it struck her once, in her forties, that she really had no notion what had become of that grandpa with the mothball breath. Source: Internet
Eating one naphthalene mothball is enough to make cats and small dogs very sick so this is not a situation to be ignored. Source: Internet