There are probably other meanings of glory hole, too, but I really don't want to investigate them.
Anyway, none of these terms has anything to do with the word gloriole.
Frauenkirche, Dresden. What the white squidgy stuff in the middle of the golden gloriole is I'm not sure. Photo by SchiDD
But, all the same, the word halo means the same thing as gloriole, and is perhaps safer.
Word Not To Use Today: gloriole. This word was made up in the 1800s from the Latin gloriōla, a small glory. (Glory, as it happens, was the term for halo in the Middle Ages, but after that we made do perfectly happily with halo and nimbus until the 1800s - and perhaps should do again).