Bosacius is now confirmed as the English name of the Electro Yaksha. But this fact doesn't go beyond that. The Chinese on the other hand.... didn't either because it was just some kind of vague Buddhist related term.
Until now!
Thanks to the recent Archon Quest we actually learn exactly what Bosacius' Chinese name means. In the cutscene where Bosacius sees the other yakshas they remind him of who he is and then in our version of the cutscene he says "My name is Bosacius, and my destiny-
That's thematically correct but misses the point which adds more depth to the scene. As I previously talked about the English names of the yaksha don't actually mean anything except for Xiao's. Alatus just means winged. But in Chinese Bosacius has the name 浮舍 which I described as possibly meaning giving up on a desire.
With the Chinese version of this cutscene we actually learn exactly what MiHoYo was going for with the name. Bosacius states that his name is 浮舍 because
浮生一刹，万般皆舍
Life can stop in an instant, all things can be given up
A different translation might be mono no aware or the Buddhist belief in valuing the impermanence of things and therefore nothing is so valuable it can't be lost. Thematically this was Bosacius deciding to make the ultimate sacrifice. But what gets lost in translation is that his own name speaks to this purpose for his life and because of that he isn't just making "the ultimate sacrifice." He's fulfilling his destiny that was prophesized in his own name. That's the ultimate accomplishment and despite his tortured life he likely died at peace because of it.
I don't know about you guys but for me it gave the cutscene more gravitas than on first watching. 
Tips and Tricks from a Super Casual Genshin f2p
