Drunk author emptied the bottle (5)
I believe the answer is:
heart
'bottle' is the definition.
(I've seen this before)
'drunk author emptied the' is the wordplay.
'drunk' indicates an anagram.
'emptied' says to hollow out the word (remove centre letters).
'author' with its middle removed is 'ar'.
'ar'+'the'='arthe'
'arthe' with letters rearranged gives 'HEART'.
(Other definitions for heart that I've seen before include "Earth (anag) -- compassion" , "show enthusiasm" , "Core, courage" , "Nucleus" , "Vital organ - centre - courage" .)