Remouillage French word that means "re-wetting". It is a stock that is made from bones that have already been use once to make a stock. The stock is weaker that the first stock and is sometimes called "second stock".

It is a stock made from bones that have already been used for stock, it is weaker than a first-quality stock and is often reduced to make glaze.

It means rewetting - a secondary stock made from bones that have already been used to made stock.

Remouillage refers to a second stock made from bones that have been used once for a primary stock in order to make complete use of the bones. It’s a weaker stock, of course, and is often added to the primary stock and reduced.