This is the 6818th most frequent French word.
lastoursville
"Lastoursville" is not a French word but the name of a town in Gabon, located in central Africa.
The word 'Lastoursville' is used as a proper noun, referring to a location or place in geographical terms.
Je partirai pour Lastoursville demain matin.
I will leave for Lastoursville tomorrow morning.
Here 'Lastoursville' is the subject of the sentence, indicating direct reference to the town and stating a quality or fact about it.
Lastoursville est réputée pour sa beauté nature.
Lastoursville is renowned for its natural beauty.
In this sentence, 'Lastoursville' is used to specify the destination or place where the event (meeting interesting people) occurred.