curvedness or vaultedness
SyrIshGen 118:8↗ ܩܒܘܬܐ ܩܪܗ݀ ܡܛܠ ܐܣܟܝܡܐ ܕܬܘܩܢܗ݀ ܒܕܠܘ ܓܠܝܠܬܐ ܗܘܬ܂ ܘܬܘܒ ܡܛܠ ܩܒܝܒܘܬܗ݀qbwtˀ qrhh mṭl ˀskymˀ dtwqnhh bdlw glyltˀ hwt. wtwb mṭl qbybwthhקבותא קרהּ מטל אסכימא דתוקנהּ בדלו גלילתא הות٠ ותוב מטל קביבותהּܩܒܘܬܐ ܩܪܗ݀ ܡܛܠ ܐܣܟܝܡܐ ܕܬܘܩܢܗ݀ ܒܕܠܘ ܓܠܝܠܬܐ ܗܘܬ܂ ܘܬܘܒ ܡܛܠ ܩܒܝܒܘܬܗ݀qbwtˀ qrhh mṭl ˀskymˀ dtwqnhh bdlw glyltˀ hwt. wtwb mṭl qbybwthhקבותא קרהּ מטל אסכימא דתוקנהּ בדלו גלילתא הות٠ ותוב מטל קביבותהּܩܒܘܬܐ ܩܪܗ݀ ܡܛܠ ܐܣܟܝܡܐ ܕܬܘܩܢܗ݀ ܒܕܠܘ ܓܠܝܠܬܐ ܗܘܬ܂ ܘܬܘܒ ܡܛܠ ܩܒܝܒܘܬܗ݀ܩܒܘܬܐ ܩܪܗ݀ ܡܛܠ ܐܣܟܝܡܐ ܕܬܘܩܢܗ݀ ܒܕܠܘ ܓܠܝܠܬܐ ܗܘܬ܂ ܘܬܘܒ ܡܛܠ ܩܒܝܒܘܬܗ݀ : he called it "ark" because of the shape of its construction, in that it was not round, and also because of its vaultedness