bite one's nails

== English == === Verb === bite one's nails (third-person singular simple present bites one's nails, present participle biting one's nails, simple past bit one's nails, past participle bitten one's nails) (idiomatic) To worry or fret over something. Synonym: chew on one's nails Used other than figuratively or idiomatically: bite one's fingernails. ==== Related terms ==== nail biter nailbiting