A moment then the volume spread, And one short spell therein he read: It had much of glamour might; Could make a ladye seem a knight;
Aqui está a entrada nela da etymonline
glamour (n.)
1720, Scottish, "magic, enchantment" (especially in phrase to cast the glamor), a variant of Scottish gramarye "magic, enchantment, spell," said to be an alteration of English grammar (q.v.) in a specialized use of that word's medieval sense of "any sort of scholarship, especially occult learning," the latter sense attested from c. 1500 in English but said to have been more common in Medieval Latin. Popularized in English by the writings of Sir Walter Scott (1771-1832). Sense of "magical beauty, alluring charm" first recorded 1840. As that quality of attractiveness especially associated with Hollywood, high-fashion, celebrity, etc., by 1939.
Jamieson's 1825 supplement to his "Etymological Dictionary of the Scottish Language" has glamour-gift "the power of enchantment; metaph. applied to female fascination." Jamieson's original edition (1808) looked to Old Norse for the source of the word. Zoëga's Old Icelandic dictionary has glám-sýni "illusion," probably from the same root as gleam.
Há uma interpretação um pouco fantasiosa que vem do livro de Charles Mackay " Dicionário Escocês das Terras Baixas " que vem do escocês "glaodh mor" ou de um grande grito , mas sua tentativa não foi realmente etimologia séria, mas sim para mostrar que todas as palavras derivam do gaélico escocês.
O livro " Origens da Palavra ... e Como Conhecemo-los: Etimologia para Todos " atribui de volta os significados alternativos de gramática, ou gramaire , como se segue:
Old French had gramaire (grammar) (a formation without direct antecedents in Greek or Latin), and in the thirteenth century, its evil twin grimoir was born. Initially, it referred to Lain grammer only (an allusion to French *grimaud [morose, sullen]?) as something unintelligible, and soon came to mean "a book of occult learning".
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grimoire reached England around the fourteenth century and had the form gramarie. Walter Scott revived its medieval sense "magic", and this is the reason gramary and gramarye still turn up in our thickest dictionaries. But then, in the north, alterations of gramarie appeared. The recorded forms are numerous, glamer, glamor, glamour, glamerie, glammerie, and glaumerie. It was again Walter Scott who revived glamor...