Balloon in bachelor flat (5)

I believe the answer is:

blimp

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

'balloon' is the definition.
(I've seen this before)

'bachelor flat' is the wordplay.
'bachelor' becomes 'B' (abbreviation e.g. BA=Bachelor of Arts).
'flat' becomes 'limp' (I can't explain this - if you can you should give a lot more credence to this answer).
'b'+'limp'='BLIMP'

'in' acts as a link.

Can you help me to learn more?

(Other definitions for blimp that I've seen before include "full of hot air?" , "David Low's cartoon colonel - airship used for publicity" , "Small barrage balloon" , "aircraft" , "Pompous type - barrage balloon" .)

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.