StatNis.66.3 :ܘܠܚܐܘܗܝ ܡ݂ܢ ܡܕܥܗܘܢ ܠܚܝܠܐ ܕܟܝܢܝ̈ܬܐ ܘܕܟܬܝ̈ܒܬܐ‏ : they deleted the power of the natural features and writings from their knowledge
See the entire entry for lḥy vb. to wash away, delete