At times it wore an expression of seriousness,-of sorrow even; and then seemed to make the very air bright with what the Italian poets so beautifully call the lampeggiar dell' angelico RISO,-the lightning of the angelic smile.
"Hyperion"
Henry Wadsworth Longfellow
I thought this question might perhaps bring il disiato RISO, the long-wished-for smile, but the Scarabee interpreted it in the simplest zoological sense, and neglected its hint of playfulness with the most absolute unconsciousness, apparently, of anything not entirely serious and literal.
"The Complete PG Works of Oliver Wendell Holmes, Sr."
Oliver Wendell Holmes, Sr. (The Physician and Poet not the Jurist)