Could be online, say, from a French city (9)
I believe the answer is:
lyonnaise
'from a french city' is the definition.
I can't tell whether this defines the answer.
'could be online say' is the wordplay.
'could be' indicates an anagram.
'online'+'say'='onlinesay'
'onlinesay' with letters rearranged gives 'LYONNAISE'.
Can you help me to learn more?
(Other definitions for lyonnaise that I've seen before include "(Of potatoes) cooked with onions in a wine sauce" , "cooking with onions" , "Served with onions" , "cooked in a way to make you cry?" .)