- defecation, laxation, shitting - the elimination of fecal waste through the anus
--1 is a kind of elimination, evacuation, excretion, excreting, voiding
--1 has particulars:bowel movement, movement, bm; hematochezia, haematochezia; shit, dump; urochesia, urochezia - loosening, laxation - the act of making something less tight
--2 is a kind of alteration, modification, adjustment
--2 has particulars: untying, undoing, unfastening