Etymology
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Mandingo 

people of the upper Niger region of West Africa, 1620s.

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briefcase (n.)

also brief-case, "portable folding case for holding papers," 1908, from brief (n.) in the paper sense + case (n.2). Earlier was brief-bag (1806).

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lowercase (v.)

"to set (text) in lower-case type," 1911, from lower-case (adj.). Related: Lowercased; lowercasing.

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tau 

nineteenth letter of the Greek alphabet, from Hebrew taw, last letter of the Hebrew alphabet, literally "sign, mark."

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lettered (adj.)

"literate, learned in letters," c. 1300, from letter (n.1). Meaning "inscribed" is from 1660s, from letter (v.).

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bookcase (n.)

also book-case, "case with shelves for holding books," 1726, from book (n.) + case (n.2). An Old English word for this was bocfodder.

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alliteration (n.)

1650s, "repetition of the same sound or letter at the beginning of words in close succession," from Modern Latin alliterationem (nominative alliteratio), noun of action from past-participle stem of alliterare "to begin with the same letter," from Latin ad "to" (see ad-) + littera (also litera) "letter, script" (see letter (n.1)). Related: Alliterational.

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overbite (n.)

"overlapping of the lower teeth by the upper ones," 1878, from over- + bite (n.).

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zed (n.)

"the name of the letter Z in the alphabet," c. 1400, probably from Old French zede, from Late Latin zeta, from Greek zēta, from Hebrew zayin, letter name, literally "weapon;" so called in reference to the shape of this letter in ancient Hebrew. U.S. pronunciation zee is first attested 1670s. Other dialectal names for the letter are izzard, ezod, uzzard, and zod.

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aitch (n.)

"the letter H," representing the pronunciation of the letter-name, by 1887, originally especially in reference to dropping it in colloquial speech.

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