This is the name of a mountain, known in Japanese as Fuji-san/Fujiyama (富士山), located on the boundaries of Shizuoka and Yamanashi prefectures in central Japan, that has been a symbol for the Japanese for centuries. The name is made up of 富 (fu, fuu, tomi, to.mu) meaning "wealth" and 士 (shi, samurai) meaning "gentleman, samurai."
The etymology of this place name is still being debated, though the theory that it is derived from Ainu フヂ (fuji)
, its meaning referring to (the goddess of) fire, a common association with volcanoes by the Ainu, is widely accepted.
One other theory, proposed by linguist and philologist Alexander Vovin, suggests that it is derived from a combination of 火 (pu)
, the Eastern Old Japanese term of 火 (hi)/(ho) (standalone)
meaning "fire" that is only attested once in the Man'yōshū, and 主 (nushi)