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English definition of “letter”

letter

noun [C]     /ˈletər/
MESSAGE A1 a written message that you send to someone, usually by post: I got a letter from Paul this morning.Letters, notes and cardsPaper and stationery
SYMBOL A2 a symbol that is used in written language and that represents a sound in that language: the letter K → See also covering letterLetters of alphabetsLettering and alphabets
(Definition of letter noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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