glass soap
An oxide of manganese and other substances used by glassblowers to remove colouring…An oxide of manganese and other substances used by glassblowers to remove colouring from glass.
Meaning
1 senses(uncountable)An oxide of manganese and other substances used by glassblowers to remove colouring from glass.
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable