Container of courage? (6)
I believe the answer is:
bottle
I believe this clue is a double definition.
'container' is the first definition.
(bottle is a kind of container)
'courage?' is the second definition.
(thesaurus)
'of' is the link.
(Other definitions for bottle that I've seen before include "Container for liquids" , "cool" , "Nerve - container" , "Jeroboam" , "Heart" .)