Kays 269:8 :ܒܐܪܥܐ ܗ݀ܝ ܝܲܩܝ݂ܪܬܐ ܘܠܐ ܡܬ݂ܗܲܠܟܢܝ݂ܬܐ‏ : in that heavy and impassable ground
See the entire entry for meṯhalləḵān adj. passable