To give off light from heat or to emit light as if heated.

“The fire was still glowing after ten hours.”

To radiate some emotional quality like light.

“The zealots glowed with religious fervor.”

To gaze especially passionately at something.

The action of the verb glow.

That glows or glow.

“glowing embers”

Full of praise.

“He received glowing references from his previous employers.”