book word

/B UH1 K W ER0 D/
noun
  1. 1

    (linguistics) A word that is encountered in writing but not usually in speech, which people may therefore not know how to pronounce (correctly).

  2. 2

    (linguistics) A word that is borrowed into a vernacular from a closely related literary language, thus being etymologically related to native vocabulary, but not showing regular sound changes.