Emily Dickinson Lexicon

WA'FER, n. [D. wafel; G. waffel; Dan. vaffel; Sw. våfflla; Russ. vaphel; Fr. gauffre.]

1. A thin cake, or leaf; as, a wafer of bread given by the Romanists in the eucharist.
2. A thin leaf of paste, or a composition of flour, the white of eggs, isinglass and yeast, spread over with gum-water and dried; used in sealing letters.