This is the 8272nd most frequent French word.
watermael
"Watermael" is not a French word; it refers to Watermael-Boitsfort, a municipality in Brussels, Belgium.
In this sentence, "Watermael" is part of the proper name of a place, indicating a geographical location.
J'ai visité Watermael-Boitsfort le week-end dernier.
I visited Watermael-Boitsfort last weekend.
Here, "Watermael" refers to the community or people of the place named Watermael, giving a sense of the collective group.
Les habitants de Watermael organisent souvent des festivals.
The residents of Watermael often organize festivals.
In this usage, "Watermael" is used to describe a specific area or district within a larger urban setting.