IshDeut 129:1 :ܪܚܝܐ܃ ܗ݀ܘ ܕܩܒܝܥ܂ ܪܟܒܐ܃ ܗ݀ܘ ܕܥܠܘܗܝ ܡܬܟܪܟ‏ : the mill is the fixed one, the upper millstone is the one that moves around on top of it
See the entire entry for krk vb. to go around, wrap around