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