| n. 1.  a.  A written symbol or character representing a speech sound and being a component of an alphabet. b.  A written symbol or character used in the graphemic representation of a word, such as the h in Thames. See Note at  Thames. 2.  A written or printed communication directed to a person or organization. 3.  often  letters A certified document granting rights to its bearer. 4.  Literal meaning: had to adhere to the letter of the law. 5.   letters (used with a sing. verb) a.  Literary culture; belles-lettres. b.  Learning or knowledge, especially of literature. c.  Literature or writing as a profession. 6.  Printing   a.  A piece of type that prints a single character. b.  A specific style of type. c.  The characters in one style of type. 7.  An emblem in the shape of the initial of a school awarded for outstanding performance, especially in varsity athletics. v.  let·tered, let·ter·ing, let·ters  v.tr. 1.  To write letters on: lettered the paper. 2.  To write in letters: lettered our name on the mailbox. v.intr.Idiom: 1.  To write or form letters. 2.  To earn a school letter, as for outstanding athletic achievement: She lettered in three collegiate sports.  to the letter  To the last detail; exactly: followed instructions to the letter. [Middle English, from Old French lettre, from Latin littera, perhaps from Etruscan, from Greek diphtherā, hide, leather, writing surface.] letter·er n. Synonyms:  letter, epistle, memorandum, missive, note These nouns denote a written communication directed to another: received a letter of complaint; the Epistles of the New Testament; a memorandum outlining the attendance policy; a missive of condolence; a thank-you note. | 
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