greyware
/ˈɡreɪwɛː/Now chiefly Archaeol.
noun
Any of various kinds of (especially ancient) clay pottery that are grey in colour, being either made from grey clay or given a grey colour in firing.
- In early use probably not as a fixed collocation.Compare brown ware, redware, etc..
Origin
Late 18th century; earliest use found in Archaeologia. From grey + ware.