source: [アイドルマスター -THE IDOLM＠STER-のGIF画像 アニメ｜無料GIF画像検索 GIFMAGAZINE 21666]

the attractive or exciting quality that makes certain people or things seem appealing or special:

(うっとりするような)魅力, 魅惑; 華やかさ

e.g. the glamour of Monte Carlo

e.g. as modifier : the glamour days of Old Hollywood.

beauty or charm that is sexually attractive:

(人の)見た目の魅力, 美しさ (!女性だけでなく男性についても用いる)

e.g. George had none of his brother's glamour.

archaic enchantment; magic:

｟古｠ 魔力; 魔法.

e.g. that maiden, made by glamour out of flowers.

early 18th century (originally Scots in the sense ‘enchantment, magic’): alteration of grammar. Although grammar itself was not used in this sense, the Latin word grammatica (from which it derives) was often used in the Middle Ages to mean ‘scholarship, learning’, including the occult practices popularly associated with learning.