indigo red
A dyestuff, isomeric with indigo blue, obtained from crude indigo as a dark brown…A dyestuff, isomeric with indigo blue, obtained from crude indigo as a dark brown amorphous powder.
Meaning
1 senses(uncountable)A dyestuff, isomeric with indigo blue, obtained from crude indigo as a dark brown amorphous powder.
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable