D defs.my
Entry 2 senses Webster, 1913

Dictionary

/dĭk'shə-nĕr-ē/ · Dic·tion·a·ry · IPA /ˈdɪk.ʃəˌnɛ.ɹi/
01 n. A book containing the words of a language, arranged alphabetically, with explanations of their meanings; a lexicon; a vocabulary; a wordbook.
pl. Dictionaries ((#))
  1. 1.
    A book containing the words of a language, arranged alphabetically, with explanations of their meanings; a lexicon; a vocabulary; a wordbook.
    “I applied myself to the perusal of our writers; and noting whatever might be of use to ascertain or illustrate any word or phrase, accumulated in time the materials of a dictionary.” Johnson.
  2. 2.
    Hence, a book containing the words belonging to any system or province of knowledge, arranged alphabetically; as, a dictionary of medicine or of botany; a biographical dictionary.