Crazed parrot, one entering Gatwick? (7)

I believe the answer is:

airport

I'm a little stuck... Click here to teach me more about this clue!

'gatwick?' is the definition.
I can't tell whether this definition defines the answer.

'crazed parrot one entering' is the wordplay.
'crazed' indicates an anagram (I've seen this in other clues).
'one' becomes 'i' (Roman numeral).
'entering' indicates putting letters inside.
'parrot' is an anagram of 'arport'.
'arport' going around 'i' is 'AIRPORT'.

Can you help me to learn more?

(Other definitions for airport that I've seen before include "See 18" , "John Lennon, say" , "Where to take flight" , "Fliers' terminus" , "Aerodrome" .)

I've seen this clue in The Sun.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.