grin·dle I. \ˈgrindəl\noun (-s) Etymology: Middle English grendyll dialect England: a small stream or ditch II. noun alsogrin·dalorgrin·del\ˈgrindəl\; orgrin·nelorgrin·nell\-nəl\ (-s) Etymology: German gründel, from grund bøttom, ground, from Old High German grunt — more at ground : bowfin