Today's Word "Onychophagia"
Practice of biting one's nails
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Published in Vocabulary
onychophagia \on-i-ko-FAY-juh, -jee-uh\ (noun) - The practice of biting one's nails.
"Such was the intensity of Courtney's onychopagia that, when added to her extreme flexibility, she was just as likely to chew on her toenails as those on her hands."
From Greek onycho, onyx, nail + -phagia, eating.