Crossword Genius

Bob tells Tom about navy dress (4-7)

Ross

I believe the answer is:

bell-bottoms

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

'bob tells tom about navy dress' is the definition.
I can't judge whether this definition defines the answer.

'bob tells tom about' is the wordplay.
'about' indicates anagramming the letters.
'bob'+'tells'+'tom'='bobtellstom'
'bobtellstom' anagrammed gives 'BELL-BOTTOMS'.

Can you help me to learn more?

(Other definitions for bell-bottoms that I've seen before include "Wide-flared trousers" , "Trousers with a flare below the knee" , "Flared trousers" , "Naval rating's trousers" , "Sailor's trousers" .)

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