Emily Dickinson Lexicon

SEC'UN-DINE, n. [Fr. secondines; from second, L. secundus, from sequor, to follow.]

In botany, the second coat or integument of an ovule reckoning the outer as the first. – Lindley. Secundines, in the plural, as generally used, are the several coats or membranes in which the fetus is wrapped in the womb; the after-birth. – Coxe. Encyc.