This is the 142nd most frequent Arabic word.
أبو
"Abu" (أبو) means "father of" and is used as a kunya (nickname or honorific) in Arabic names.
The word "أبو" is used as part of a name (Abu Yusuf), which signifies 'father of Yusuf', often a nickname or title.
أنا أعيش في المنزل الذي بناه أبو يوسف.
I live in the house that Abu Yusuf built.
The word "أبو" here is not used; however, a learner might confuse "أبو" with "أبواب" (doors).
أبواب المنزل مفتوحة.
The doors of the house are open.
The word "أبو" is used in the sense of 'father of Ahmad', commonly used as a title or respectful nickname.