LSt.65:16 : ܘܕܚ݁ܐ ܡܢܗ ܠܝܬܝܪܘܬܐ ܕܠܐ ܚܫܚܐ‏ : it expels from (the body) the unneeded excess
See the entire entry for yattīrū, yattīrūṯā n.f. excess