Emily Dickinson Lexicon

PAR'A-PET, n. [Fr.; Sp. parapeto; It. parapetto; para, for and petto, breast, L. pectus.]

Literally, a wall or rampart to the breast or breast high; but in practice, a wall, rampart or elevation of earth for covering soldiers from an enemy's shot, or serving as a support to a quay, a bridge or terrace. – Encyc.