What's the plural form of boneblack? Here's the word you're looking for.
Answer
The noun boneblack can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be boneblack.
However, in more specific contexts, the plural form can also be boneblacks e.g. in reference to various types of boneblacks
or a collection of boneblacks.
