Search Result for "uterine contraction":
Wordnet 3.0

NOUN (1)

1. 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; 



WordNet (r) 3.0 (2006):

uterine contraction
    n 1: 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