Airman's new girl? (6)

I believe the answer is:

marina

'girl?' is the definition.

'airman's new' is the wordplay.
'new' indicates anagramming the letters.
'airman' with letters rearranged gives 'MARINA'.

(Other definitions for marina that I've seen before include "boating facility" , "Docking place for pleasure craft" , "Place for mooring boats" , "place to moor up?" , "Yachting centre" .)

I've seen this clue in the Evening Standard.

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.