DeMundo 142:22 :ܗܢ݁ܘܢ ܡ݁ܢ ܕܡܢ ܐܪܥܐ ܕܬܠܝܠܐ ܡܬܝܠܕܝ݂ܢ܂ ܐܪ̈ܥܢܐ ܡܬܩܪ̈ܝܢ‏ : those (winds) that develop from moist ground are termed terrestrial
See the entire entry for ˀarˁān adj. terrestrial