Definition of onychophagist in English:

onychophagist

(also onygophagist, onycophagist)

noun

rare
  • A person who bites his or her nails, especially habitually or compulsively.

Origin

Mid 19th century; earliest use found in Robert Southey (1774–1843), poet and reviewer. From onycho- + -phagist.

Pronunciation

onychophagist

/ɒnɪˈkɒfədʒəst/