Uterine souffle is defined as
The uterine souffle is a soft, blowing sound that is synchronous with the maternal pulse.It is usually heard most distinctly near the lower poion of the uterus.This sound is produced by the passage of blood through the dilated uterine vessels.It also may be heard with any condition in which uterine blood flow is greatly increased, for example, with large uterine myomas or ovarian tumours.