This is the Qal’a Ji Arabic-English book. Uploaded upon request.
معجم لغة الفقهاء عربي – إنجليزي
Published by Bilal Ali
Bilal Ali is a student of the sacred Islamic sciences with a special interest in Hadith, Hanafi law, Behavioral Science, and Education. He currently serves in various capacities at Darul Qasim College, Khalil Center, Al-Mustafa Foundation, Masjid Uthman, and Usul Academy.
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Ṭaḥāwī 
As-Salaamu ‘alaykum,
Do you know if a similar dictionary is available for Nahw?
here is a site where you can download it in a Word Document. http://www.ghazali.org/arabic/
As for purchase here is a link where you can buy it online: