Emily Dickinson Lexicon

CI'DER, n. [Fr. cidre or sidre; It. sidro; Sp. sidra; Arm. cistr; Port. cidra, a citron and cider. This cannot be the Gr. σικερα, unless the radical letter has been changed.]

The juice of apples expressed, a liquor used for drink. The word was formerly used to signify the juice of other fruits, and other kinds of strong liquor; but it is now appropriated to the juice of apples, before and after fermentation.