
1) Agricultural terminology 2) Persian book 3) Type of garden 
Found on 
https://www.crosswordclues.com/clue/bustan
 [book]
[book]  Bustan (or Bostan بوستان, pronounced `Bustān` ) is a book of poetry by the Persian poet Saadi, completed in 1257 and dedicated to the Salghurid Atabeg Sa`d I or Sa`d II. It was Saadi`s first work, and its title means `the fruit orchard`. The book contains the fruits of Saadi`s long experience and his judgements upon life, and ...
Found on 
http://en.wikipedia.org/wiki/Bustan_(book)
 [garden]
[garden]  Bustan (بوستان; بُسْتَان) is an agricultural garden - a farm near the house which includes fruit trees, vegetable seedlings, shrubs, and spices. The word in Persian means a place of smell in English. Use of the word probably began during the Muslim empire and is equivalent to use the words` gene `and` Pardes Jewish so...
Found on 
http://en.wikipedia.org/wiki/Bustan_(garden)
 [organization]
[organization]  Bustan (Arabic and Hebrew for `fruit garden`) is a joint Israeli-Palestinian non-profit organization of eco-builders, architects, academics, and farmers who promote environmental and social justice in Israel/Palestine. It uses tactics such as non-violent direct action and lobbying to improve the quality of life for marginaliz...
Found on 
http://en.wikipedia.org/wiki/Bustan_(organization)

Bustan is a cultivated variety of potato.
Found on 
http://www.probertencyclopaedia.com/browse/QB.HTM
  No exact match found.