Tomoshibi / 灯: “light”, “lamp”, or “lamp light”; possibly also referring to the light source. The pronunciation is given in hiragana (ともしび) because 灯 can be read in multiple ways.
Here we have another translation from Edward, this time of Tomoshibi / 灯. He actually posted this about a month ago, but as evident in my lack of recent posts, I hadn’t gotten the chance until now to share it. As always, I highly recommend you read his translation notes in his post.
Even with such a clear translation, I still have no idea what this song is about. Anyone with any insights, please do leave a comment and share.