lotus, Mt Fuji
芙 centers on the lotus flower, a plant associated with beauty and purity. The Mt Fuji meaning is a specific poetic or name usage, not a separate core idea.
芙 combines 艹 (plant) with 夫, which likely contributes the sound フ. The character refers to the lotus plant.
The plant top 艹 sits above 夫, like a lotus flower rising above the water. Think of a husband (夫) presenting a lotus to his wife.
For フ, imagine a lotus flower floating on Mount Fuji's reflection: Fuji starts with フ, and the lotus is 芙.
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