Emily Dickinson Lexicon

DI'A-PHRAGM, n. [di'afram; Gr. διαφραγμα; δια and φρασσω, to break off, to defend.]

1. In anatomy, the midriff, a muscle separating the chest or thorax from the abdomen or lower belly. – Coxe. Encyc.
2. A partition or dividing substance. – Woodward.