HippAp 31(25) :ܐܝܠܝܢ ܕܡܙܕܥܙܥ ܡܘܚܐ ܕܪܝܫܗܘܢ ܐܠܨܐ ܕܢܫܬܬܩܘܢ ܒܪ ܫܥܬܗ‏ : those whose head marrow is shaking must be quieted down right away
See the entire entry for zwˁ vb. to move; to tremor