The best option is probably convert wordnet infused english to italian (
http://eb.lv/ <--it's free), or buy a kindle dictionary decompile and convert it to stardict.
I don't know if there is good italian dictionaries in de kobo forum, if there is perhaps they can provide a conversion to stardict so you can use it.
https://www.mobileread.com/forums/sh...d.php?t=232883