Name old hospital drama (3)
I believe the answer is:
noh
'drama' is the definition.
(Noh or No is a Japanese masked drama)
'name old hospital' is the wordplay.
'name' becomes 'n' (common abbreviation e.g. on forms).
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'hospital' becomes 'h'.
'n'+'o'+'h'='NOH'
(Other definitions for noh that I've seen before include "Arkwright" , "Traditional Japanese stage drama" , "Japanese drama form" , "Traditional Japanese masked drama" , "Sort of drama" .)