underglaze
verbEtymology From under- + glaze.
1
To apply a decorative slip to the surface of pottery before glazing.
underglaze
nounEtymology From under- + glaze.
1
A decorative slip applied to the surface of pottery before glazing.
- Blue and white pieces from doll's dinner- and tea-services. Jug 1½ ins. high, cups 1 in. high, plate 1¼ ins. diameter. Also there are many larger cups and saucers, dishes, teapots and jugs, all very beautiful and some with S in underglaze blue marked on them.1971, Gwen White, Antique Toys And Their Background, page 236: