GNU Collaborative International Dictionary of English

Found one definition

1.       
   Gril (grĭl), a. [OE. gril harsh; akin to G. grell offending the ear or eye, shrill, dazzling, MHG. grel angry; cf. AS. gallan to provoke.] Harsh; hard; severe; stern; rough. [Obs.]  Rom. of R.
   
   [1913 Webster]