n. porcelain made at Derby and often marked with a crown. crown glass n. glass without lead or iron used formerly in windows, now as optical glass of low refractive index. crown jewels n.pL sovereign’s State regalia etc.
n. porcelain made at Derby and often marked with a crown. crown glass n. glass without lead or iron used formerly in windows, now as optical glass of low refractive index. crown jewels n.pL sovereign’s State regalia etc.