Official crossing place (7,5)
I believe the answer is:
polling booth
'official crossing' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'place' is the wordplay.
I cannot quite see how this works, but
'place' could be 'polling' (polling place is a kind of place) and 'polling' is found in the answer.
The remaining letters 'booth' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for polling booth that I've seen is " Place to register vote".)