Lubabah
While the exact name Lubabah is not mentioned, its root 'Lubb' appears in the phrase 'Ulul Albab' (people of understanding) in Surah Al-Imran and other verses.
She was a respected early Muslim woman, wife of Abbas ibn Abd al-Muttalib, and mother of Abdullah ibn Abbas, a major Islamic scholar.
It means the essence, core, marrow, or the choicest part, symbolizing deep intellect and spiritual understanding.
No, it is extremely rare in contemporary usage, though historically significant in early Islamic and Persian noble families.
While the abstract form Lubab is unisex, Lubabah is traditionally feminine. For boys, Lubab or Labib would be more conventional.