The beaker gets its name from its resemblance to a cylindrical drinking cup or drinking vessel. Its name is derived from the Old English word "becere" which means "drinking vessel."
It is describing the horse. It is a drinking horse. The verb in that sentence is the word "is".
A challis, or flagon.
A horn.
the answer is tankard
tankard
A 'Toby Jug'.
A mug is a drinking vessel with a handle
Teacup.
chalice
Tankard
A drinking vessel for beer. It's a mug.