The phrase "uterus contract" refers to the tightening and squeezing of the uterus muscles. This typically happens during childbirth or when a woman has her menstrual period. Full definition
what about the benefits of breast feeding to help uterus contract back to normal and what about the less talked about role of breastfeeding in increasing sensations of as you feed, reinforcing pleasure in breast - feeding (babycenter.com)
My deflated uterus contracted under the strain of the baby's car seat; I braced myself against the car to keep from slipping on the icy ground. (scarymommy.com)
As the uterus sheds cells, they are passed through the very small opening in the cervix, which is obviously why the uterus contracts. (thefashionablehousewife.com)