Emily Dickinson Lexicon

ES-PLAN-ADE', n. [Fr. id.; Sp. esplanada; It. spianata; from L. planus, plain.]

1. In fortification, the glacis of the counterscarp, or the sloping of the parapet of the covered way toward the country, or the void space between the glams of a citadel, and the first houses of the town. Encyc. Bailey.
2. In gardening, a grass-plat.