Improve Grey substance meaning in Urdu

Is there any meaning of the word grey substance that needs an edit? Please click that meaning to rewrite it.

سرمئی مادہ

Is there any meaning of the word grey substance that needs to be removed from the list? Please click that meaning to mark it for deletion.

سرمئی مادہ

Do you want to add a new meaning, definition, and a sentence of the word grey substance? Please feel free to add.