Courage; container (6)
I believe the answer is:
bottle
I believe this is a double definition.
'courage' is the first definition.
(bottle can mean courage)
'container' is the second definition.
(I know that bottle is a container)
(Other definitions for bottle that I've seen before include "Type of marine mammal" , "Narrow-necked vessel" , "Glass container - firmness of resolve" , "It keeps drink" , "Vessel - nerve" .)