A patient finally brought into that place? (7)
I believe the answer is:
theatre
'a patient finally brought into that place?' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'a patient finally brought into that place?' is the wordplay.
'finally' suggests the final letters.
'brought into' means one lot of letters goes inside another.
'that place?' becomes 'there' (as opposed to 'here' meaning this place).
The final letter of 'patient' is 't'.
'a'+'t'='at'
'at' inserted inside 'there' is 'THEATRE'.
Can you help me to learn more?
(Other definitions for theatre that I've seen before include "(Military) field of action" , "Criterion, perhaps" , "natural land formation?" , "stage productions" , "place of action" .)