Allow a doctor turning up on strike to leave hospital (5)
I believe the answer is:
admit
'allow a doctor turning' is the definition.
'admit' can be an answer for 'allow' (admitting is a kind of allowing). I'm unsure of the 'a doctor turning' bit.
'up on strike to leave hospital' is the wordplay.
'up on' becomes 'adm' (I can't justify this - if you can you should believe this answer much more).
'strike' becomes 'hit' ('hit' can be a synonym of 'strike').
'to leave' is a deletion indicator.
'hospital' becomes 'h'.
'hit' with 'h' taken out is 'it'.
'adm'+'it'='ADMIT'
Can you help me to learn more?
(Other definitions for admit that I've seen before include "Profess" , "Confess; allow in" , "Confess - let in" , "Confess - acknowledge" , "Grant entry to" .)