This is the 2161st most frequent French word.
connais
"Connais" means "know" (as in being familiar with someone or something).
The word 'connais' here indicates familiarity or personal knowledge of the city in question.
Je connais cette ville.
I know this city.
In this sentence, 'connais' is used to denote acquaintance with or recognition of a person.
Tu connais mon frère, n'est-ce pas?
You know my brother, don't you?
Here, 'connaît' (the verb 'connaître' conjugated for 'il') expresses familiarity with or understanding of the language.