DeMundo 143:6 :ܐܓܪܐܣܛܝܣ ܕܝܢ ܡܫܬܡܗ݂܂ ܗܘ݁ ܕܡܢ ܐܬܪܐ ܕܡܥܪ̈ܒܝ ܫܡܫܐ ܩܝܛܝܐ ܢܫ݁ܒ‏ : the one that blows from the place of the summertime setting sun is called agrestes
See the entire entry for ˀgrˀsṭys n.m. northwest wind