IshExod 53:24 :ܛܦܪܐ ܠܗܠܝܢ ܛܦܪ̈ܐ ܕܚܠܙܘ̈ܢܐ ܕܝܡܐ ܩ݁ܪܐ܂ ܘܡܛܪܝܢ ܠܗܘܢ ܘܥܐܠܝܢ ܒܒܣ̈ܡܢܐ‏ : ṭ' is what he calls murex shells, and they protect them and go into spice compounds
See the entire entry for ṭp̄ar, ṭep̄rā n.f. fingernail, toenail