Where journeys start or a trip may be arranged (7)
I believe the answer is:
airport
'where journeys start' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'or a trip may be arranged' is the wordplay.
'or a trip' anagrams to 'AIRPORT'.
But, I'm not clear how the anagram is indicated.
Can you help me to learn more?
(Other definitions for airport that I've seen before include "place with lounges for travellers?" , "O'Hare or Kennedy, say" , "Terminal for planes" , "Par trio (anag) -- Charles de Gaulle, say" , "where flight begins or ends" .)