What's the plural form of stillage? Here's the word you're looking for.
Answer
The noun stillage can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be stillage.
However, in more specific contexts, the plural form can also be stillages e.g. in reference to various types of stillages
or a collection of stillages.
Examples
After passing through the sour the goods are piled in a heap on the stillage for a few hours.
Cask beer is the traditional method of service, via a hand pump or by gravity straight from the cask on stillage.