Glass sailing ship (8)
I believe the answer is:
schooner
I believe this is a double definition.
'glass' is the first definition.
(schooner is a kind of glass)
'sailing ship' is the second definition.
(schooner is a kind of sailing ship)
(Other definitions for schooner that I've seen before include "that carries sherry" , "Large beer or sherry glass" , "boat" , "No chores on this sailing ship" , "Sailing vessel - drinking vessel" .)