This is the 10484th most frequent French word.
lilloise
"Lilloise" refers to a female native or inhabitant of Lille, a city in northern France.
The word 'lilloise' is used as an adjective describing someone's origin from Lille.
Elle est lilloise.
She is from Lille.
Here 'lilloise' functions as an attributive adjective modifying the noun 'spécialité' to imply it relates to Lille.
J'ai goûté une spécialité lilloise au marché.
I tasted a Lille specialty at the market.
In this sentence, 'lilloise' is an adjective describing 'culture', denoting something originating from Lille.