Definitions

1. noun

A river in northern France, or a chemical compound containing manganese.

“The hikers followed the Marne River through the forest.”

2. proper noun

A series of battles during World War I, fought from 1914 to 1918.

“The Marne was a turning point in the war, marking a shift in German momentum.”

3. verb

To treat with a solution containing manganese, especially in the process of removing sulfur from steel.

“The steel is marne-d to remove impurities and improve its quality.”