The word Bint (بِنْت) means "daughter", while Mas'ood (مَسْعُوْد) is a proper name. Therefore, "Bint e Mas'ood" (بِنْتِ مَسْعُوْد) simply means "the daughter of Mas'ood". The meanings mentioned in the question are not correct. Furthermore, Bint e Mas'ood is not the name of any Sahabiyat. However, many Sahabiyat had fathers named Mas'ood, and on that basis it is correct to refer to them as Bint e Mas'ood.
Allah the Almighty knows best.
Darul Ifta Al-Ikhlas, Karachi.
سنن ابی داؤد: (رقم الحدیث: 4955، ط: دار ابن حزم)
عن أبي الدرداء قال: قال: رسول اللہ صلی اللہ علیه وسلم: تُدعون یوم القیامة بأسمائکم وأسماء آبائکم فأحسنوا أسمائکم․
مصباح اللغات :(ص: 74)
البنت: بیٹی