One flying north, perhaps, out East? (6)
I believe the answer is:
hornet
'one flying' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'north perhaps out east?' is the wordplay.
'perhaps' is an anagram indicator.
'out' is an insertion indicator.
'east?' becomes 'E' (abbreviation).
'north' anagrammed gives 'hornt'.
'hornt' placed around 'e' is 'HORNET'.
Can you help me to learn more?
(Other definitions for hornet that I've seen before include "Run through" , "Stingy type" , "Stinging insect" , "Vespa" , "A large wasp with severe sting (6)" .)