noun
opal glass; milk glass
A type of translucent or opaque white glass, often used in lighting fixtures, tableware, and decorative items.
このランプシェードは乳白ガラスでできている。
This lampshade is made of opal glass.
すりガラス is frosted glass with a roughened surface, while 乳白ガラス is opal glass that is inherently milky throughout.
Compound of 乳白 (milky white) and ガラス (glass). The exact historical derivation is uncertain, but the term describes the material's appearance.