Kays 209:21 :ܡܛܠܗ݀ܕܐ ܡ݂ܬܩܪܝܢ ܛܥܝ̈ܐ܂ ܕܗܐ ܠܡ ܛ݁ܥܝܢ܂ ܗ̄ ܕܪܕܝܢ ܠܘ݂ܩܒܠ ܡܕܢܚܐ ܘܠܐ ܣܟ ܡ݂ܬܗܦܟܢܐܝ݂ܬ‏ : because of this they are called "wanderers", in that they "wander", that is they move toward the east and not at all backwards
See the entire entry for mthpknˀyt adv. backwards

Kays 209:21 :ܡܘܙܠܬܐ ܠܘ݂ܩܒܠ ܡܥܪܒܐ ܗ݀ܐ ܩ݁ܛܝܐ ܐܘܟܝ݂ܬ ܡܬܟܪܟܐ‏ : the cosmic sphere is driven westward, i.e. goes around
See the entire entry for qṭy vb. to move around