In the island of Djerba (where my parents have been born), there's a site named: "Houmet beni dighet", which is known due to its special species of barley, about which one can read (in the 13-th section) here: http://www.ibgs.cz/photos/book_of_abstracts/Session_1.htm.

The name of this site sounds berber, but I've never succeeded to inquire what is the meaning of the third word of the name: "dighet". Unfortunately, I don't speak berber, nor do I read arabic (I just speak arabic, or rather: the tunisian dialect of arabic), and even my knowledge in french must get improved...

So, maybe you are indeed the person who might be able to solve my old riddle: what is "dighet" in tunisian-beber?

Thanks in advance!