City that was elegant in the past (7)

I believe the answer is:

chicago

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'city that' is the definition.
'chicago' can be an answer for 'city' (Chicago is an example). I'm unsure of the remainder of the definition.

'elegant in the past' is the wordplay.
'elegant' becomes 'chic' (I've seen this before).
'in the past' becomes 'ago' (synonyms).
'chic'+'ago'='CHICAGO'

'was' acts as a link.

Can you help me to learn more?

(Other definitions for chicago that I've seen before include "City on Lake Michigan" , "A windy place" , "3 city in the US" , "1970s' John Kander/Fred Ebb musical" , "Type of bridge" .)

I've seen this clue in The Mirror.

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