According to Webster's New International Dictionary (unabridged, 2nd),
"Abu" [prev.Rom.sp. "Abou"] means, literally, "father" in Arabic.
It is the first element in many Arabic male proper names.
Also, according to this source, in the ancient Babylonian religion, "Abu" was the name of "a Sumerian deity identical with Ninurta".
[see also OED; the word is not listed in Merriam-Webster's unabridged, 3rd, although there are 5 names listed beginning with "Abu"]
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According to a number of online dictionary sources, "Abu" is a (contemporary) Arabic term meaning "father of".
see:
http://encyclopedia.thefreedictionary.com/Abu+(Arabic+term)
http://www.answers.com/topic/abu-arabic-term?method=5&linktext=Abu
http://en.wiktionary.org/wiki/Abu
http://en.wikipedia.org/wiki/Abu
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According to another online source: "Abu" is supposed to be an historical Arabic word for a "holy man or saint" from any religion - said to be used now mostly by archaeologists. According to this source: "Arabs of today use the word as a slang term to describe the head of a family or father of children".
see:
http://www.touregypt.net/abu.htm
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Noddy -It would be simpler if you were right, but unfortunately not. Sorry.