What does "wafer" mean?

Wafer: (Eccl.) 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.

Additional senses

  1. 2.An adhesive disk of dried paste, made of flour, gelatin, isinglass, or the like, and coloring matter, -- used in sealing letters and other documents. Wafer cake, a sweet, thin cake. Shak. -- Wafer irons, or Wafer tongs (Cookery), a pincher-shaped contrivance, having flat plates, or blades, between which wafers are baked. -- Wafer woman, a woman who sold wafer cakes; also, one employed in amorous intrigues. Beau. & Fl.
  2. 3.To seal or close with a wafer.

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