(n) the serous fluid in which the embryo is suspended inside the amnion, Syn. waters, amnionic fluid, Example:before a woman gives birth her waters break
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
n. [ Gr. &unr_; the membrane round the fetus, dim. of &unr_; lamb. ] (Anat.) A thin membrane surrounding the embryos of mammals, birds, and reptiles. [ 1913 Webster ]