This is the 11532nd most frequent French word.
roumaine
"Roumaine" means "Romanian" (feminine form).
Here, 'roumaine' is used as an adjective to describe the nationality of the female friend mentioned in the sentence.
Je connais une amie roumaine qui habite à Paris.
I know a Romanian friend who lives in Paris.
'Roumaine' functions as an adjective modifying 'cuisine' to specify its cultural origin.
La cuisine roumaine est connue pour ses plats traditionnels.
Romanian cuisine is known for its traditional dishes.
In this example, while 'roumains' is the masculine plural form, it shows the connection to the country Romania for the employees.