Ubax
Yes. Ubax is a documented Somali word meaning 'flower' and is used as a feminine given name among Somali speakers.
No. Ubax is a Somali vernacular name and does not appear in the Quranic text.
In Somali it is pronounced approximately [uˈbax]; in English transcription often 'u-BAX' with the final sound similar to a voiceless pharyngeal/kh-like consonant.
Yes. As a nature-based Somali name with no conflicting religious meaning, Ubax is widely acceptable and used by Muslim families from Somali-speaking communities.
The Arabic translation for the meaning 'flower' is زهرة (zahra). Some families use that Arabic word as an equivalent, but Ubax itself is Somali.