This strikes me as certainly the right answer, Matthew; thank you for finding it!  It's really interesting to see a Farsi medical loanword in the tenth-eleventh century KCT.  Just to confirm, the term jagrī does not appear in the ninth century MS of the Suśrutasaṃhitā (or in later versions of the text available to me).  Nor do I find it in the etext versions of any classical Āyurvedic text.  

Best,

Dominik