Doctor to die in agony having no water left (5)
I believe the answer is:
dried
'no water left' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?
'doctor to die in agony' is the wordplay.
'doctor' becomes 'Dr' (abbreviation).
'in agony' indicates anagramming the letters.
'die' with letters rearranged gives 'ied'.
'dr'+'ied'='DRIED'
'having' acts as a link.
Can you help me to learn more?
(Other definitions for dried that I've seen before include "Forgot words (on stage)" , "Desiccated" , "Preserved, in a way" , "Parched" , "dehydrated" .)