afterbirth, after burthen

[Eng. after, and birth.] Phys. The membrane in which the birth was enveloped, which is afterwards brought away; the secundine. "The exorbitances or degenerations, whether from a hurt in labour, or from part of the afterbirth left behind, produce such virulent distempers of the blood, as make it cast out a tumour."-Wiseman: Surgery.