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English definition of “letter”

letter

noun [C] (SYMBOL)    /ˈlet.ər/ US  /ˈlet̬.ɚ/
A2 any of the set of symbols used to write a language, representing a sound in the language: the letter DLettering and alphabetsLetters of alphabets the letter of the law formal the exact words of the law and not its more important general meaningRules and laws
(Definition of letter noun (SYMBOL) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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