What's the plural form of cordonnet? Here's the word you're looking for.
Answer
The noun cordonnet can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be cordonnet.
However, in more specific contexts, the plural form can also be cordonnets e.g. in reference to various types of cordonnets
or a collection of cordonnets.
Examples
The pattern is outlined with a cordonnet of a flat, untwisted silk strand.
Is usually worked with horsehair on the edges to give firmness to the cordonnet.