The answer is:
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Wafer (n.) — A thin cake made of flour and other ingredients.
Wafer (n.) — A thin cake or piece of bread (commonly unleavened, circular, and stamped with a crucifix or with the sacred monogram) used in the Eucharist, as in the Roman Catholic Church.
Wafer (n.) — An adhesive disk of dried paste, made of flour, gelatin, isinglass, or the like, and coloring matter, -- used in sealing letters and other documents.
Wafered (imp. & p. p.) — of Wafer
Wafering (p. pr. & vb. n.) — of Wafer