A dictionary is
a book that not only lists and records the words of a language but
it also tells you how speakers of the language spell, pronounce,
define, explain and use the words of their language.
Reference Book -
provides useful information. Valuable only if you learn how to use
it correctly and efficiently
List of Dictionary Uses (9)
The following is a list of things that can be learned from a
dictionary.
(i) spelling
(ii) Pronunciation
iii) part of speech
iv) Origin of word
(v) meaning/explanation
(vi) usage/restrictive labels
(vii) synonyms & antonyms
(viii) foreign words & phrases
ix) general information.