
Bostanji, also Bostandji (from bostancı, literally `gardener` ), was one of the imperial guards of the Ottoman Empire. Bostanjis were mainly responsible for protecting the sultan`s palace and its premises. Their chief was called the Bostanji-bashi (bostancıbaşı), and he had the rank of a pasha. ...
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http://en.wikipedia.org/wiki/Bostanji

The Bostanji were a class of men in Turkey, originally the sultan's gardeners, but later also employed in several ways about his person, as mounting guard at the seraglio, rowing his barge, etc, and likewise in attending the officer of the royal household.
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http://www.probertencyclopaedia.com/browse/CXB.HTM
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