Definitions from Wiktionary ( )

▸ noun:  A reference work with a list of words from one or more languages, normally ordered alphabetically, explaining each word's meanings (senses), and sometimes also containing information on its etymology, pronunciation, usage, semantic relations, and translations, as well as other data.
▸ noun:  (preceded by the) A synchronic dictionary of a standardised language held to only contain words that are properly part of the language.
▸ noun:  (by extension) Any work that has a list of material organized alphabetically; e.g., biographical dictionary, encyclopedic dictionary.
▸ noun:  (computing) An associative array, a data structure where each value is referenced by a particular key, analogous to words and definitions in a dictionary (sense 1).
▸ verb:  (transitive) To look up in a dictionary.
▸ verb:  (transitive) To add to a dictionary.
▸ verb:  (intransitive, rare) To compile a dictionary.
▸ noun:  Nickname for a swot or studious person, or one who uses needlessly complicated words.

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