Meaning of underglaze

un•der•glaze

Pronunciation: (un'dur-glāz"), [key]
— Ceram. Ceram.
—adj.
  1. (of a color or decoration) applied to a piece before the piece is glazed.
—n.
  1. color or decoration applied to a piece before it is glazed.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.