This is the 7212th most frequent French word.
musgrove
The word "musgrove" does not exist in French. It may be a proper noun or misspelling.
Here, 'Musgrove' is used as a proper noun, referring to the name of a store.
Le magasin s'appelle Musgrove.
The store is called Musgrove.
'Musgrove' is used here as a surname, referring to an author.
J'ai lu un livre écrit par un auteur nommé Musgrove.
I read a book written by an author named Musgrove.
'Musgrove' is acting as a reference to the individual or possibly group who created the concept.