a rhythmic tightening in labor of the upper uterine musculature that contracts the size of the uterus and pushes the fetus toward the birth canal | productive work (especially physical work done for wages) |
| any piece of work that is undertaken or attempted |
| a social class comprising those who do manual labor or work for wages |
| an organized attempt by workers to improve their status by united action (particularly via labor unions) or the leaders of this movement |
| concluding state of pregnancy; from the onset of contractions to the birth of a child |