embroidery
黼 centers on decorative needlework: embroidery, especially the kind used to adorn formal or ceremonial textiles.
黼 combines 黹 (embroidery, needlework) with 甫, which likely contributes a phonetic element. The character is associated with ornate stitched patterns on ceremonial robes.
The left side 黹 looks like a needle piercing through fabric, and the right side 甫 suggests a pattern being stitched. Together they create embroidery.
For フ, imagine a beautiful embroidery of Mount Fuji (ふじ): Fuji -> フ, and the needlework captures the mountain's shape.