JSmem 9:157 :ܫ݂ܩܠ ܡܢ ܓܘܫܡܗ ܓܝܓܠܐ ܕܚ݁ܫܐ ܘܣܡ ܒܗ ܐܬ݁ܐ‏ : he took from his body [by circumcision] a painful circle and made a sign of it
See the entire entry for giggal, giggəlā n.f. wheel