Soaring via an interchange (5)
I believe the answer is:
'soaring' is the definition.
Although both the answer and definition are adjectives, I can't understand how one could define the other.
'via an interchange' is the wordplay.
'via an' anagrams to 'AVIAN'.
Though, I'm not clear how the anagram is indicated.
Can you help me to learn more?
(Other definitions for avian that I've seen before include "Pertaining to or characteristic of birds" , "Lizard with adhesive foot-pads" , "Like rails, for example" , "To do with birds - like a dangerous flu" , "Relating to birds" .)