1For the sun, moon, or a light to shine, giving off light and being bright.
今日は朝から太陽がぎらぎら照っている。
The sun has been blazing since this morning.
満月が照って、夜道でも歩きやすかった。
The full moon was shining, making it easy to walk even at night.
てるてる坊主を吊るせば明日は照ると言われている。
It's said that if you hang a teru teru bōzu, the sun will shine tomorrow.
2(Noh theater term) for a noh mask to tilt slightly upward, expressing joy or a related emotion; a specialized term derived from 「面照る」.
この場面では面が照って、登場人物の喜びを表現する。
In this scene, the mask tilts slightly upward to express the character's joy.