Jument n. : A beast; especially, a beast of burden.

Example:
Did the lighthouse keeper in Jean Guichard’s "Phares dans la Tempete, la Jument" survive?

Taxonomy
lighthouse, phare de la Jument, free encyclopedia, Brick, Concrete, island, lens, Photographs, lighthouse keepers, phares, Ushant, rock, Roman, Presses de la Cité, History, search, 1904-1911, Tower shape.

Defination from the web:
Jument is the name of a lighthouse at the Northwestern part of France, Brittany. The lighthouse is built on a rock (that is also called La Jument) about 300 metres from the coast of the island of Ushant, in the middle of the ocean. ...