Zaytoon
Yes, it appears in Surah At-Tin (95:1) where Allah swears by the fig and the olive, and in Surah An-Nur (24:35) describing the blessed olive tree as the source of divine light.
It is grammatically unisex, though often used for girls due to the feminine form in Arabic, but historically usable for boys in Persian and Swahili Muslim contexts.
It represents light, blessing, peace, and divine guidance. Its oil (zayt) was used to light the Prophet's Mosque and is mentioned in Hadith as coming from a blessed tree.
Yes, particularly in Swahili-speaking coastal communities (as 'Zeituni') influenced by centuries of Persian and Arab maritime trade, though it remains a rare, prestigious nature name.
Zaytoon maintains the classical Arabic pronunciation preferred in Persian Islamic scholarship, whereas Zaitun reflects Malay influence and Zeytin reflects Turkish phonetic shifts.