Haggard, doctor with beard (5)
I believe the answer is:
drawn
'haggard' is the definition.
(I know that haggard can be written as drawn)
'doctor with beard' is the wordplay.
'doctor' becomes 'Dr' (abbreviation).
'with' says to put letters next to each other.
'beard' becomes 'awn' (both can mean a growth on plants).
'dr'+'awn'='DRAWN'
(Other definitions for drawn that I've seen before include "tense" , "showing signs of strain" , "Described" , "Attracted - depicted" , "Tired and worn" .)