Message sensibly delivered in this bottle? (5)
I believe the answer is:
nerve
'this bottle?' is the definition.
(both can mean courage)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for nerve that I've seen before include "Bundles of fibres in the body that transmit instructions" , "Valour, pluck" , "Intrepidity" , "Spunk" , "Bodily fibre carrying sensation" .)