Is an airman crazy for her? (6)

I believe the answer is:

marina

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

'her?' is the definition.

'is an airman crazy' is the wordplay.
'airman' anagrams to 'MARINA'.
Though, I am not clear how this is indicated.

'for' acts as a link.

Can you help me to learn more?

(Other definitions for marina that I've seen before include "Docking place for pleasure craft" , "where yachts moor" , "Yachting centre" , "Place for mooring boats" , "Dock for pleasure craft" .)

I've seen this clue in the Evening Standard.

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