FMSD 18.2:3 :ܘܠܒܘܫܗ ܕܝ ܗܘܐ ܣܝܒ ܡܢ ܕܩ̈ܠܝܐ‏ : his clothing was date fiber
See the entire entry for sīḇ, sīḇā n.m. fibrous substance