Lament medic getting receptacle (5)
I believe the answer is:
mourn
'lament' is the definition.
(I've seen this in another clue)
'medic getting receptacle' is the wordplay.
'medic' becomes 'mo' (medical officer).
'getting' is a charade indicator (letters next to each other).
'receptacle' becomes 'urn' (I've seen this in another clue).
'mo'+'urn'='MOURN'
(Other definitions for mourn that I've seen before include "Express sadness" , "Grieve for a death" , "Lament loss" , "'Miss'" , "Keen" .)