This is the 5268th most frequent Japanese word.
麗
"麗" means "beautiful" or "lovely."
Here, "麗しい" describes the beauty and elegance of her smile, often associated with refined and attractive qualities.
彼女は麗しい笑顔を持っています。
She has a beautiful smile.
In this context, "麗" is used metaphorically to denote the picturesque and beauty of the scenery.
麗の如き景色が広がっていました。
A scene resembling beauty stretched before us.
"麗人" combines "麗" (beautiful/elegant) and "人" (person) to refer to an elegant and charming individual.