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