Magnum n. : A large wine bottle.

Magnum n. : A bone of the carpus at the base of the third metacarpal bone.

Example:
What does the term Magnum mean in cartridge specification?

Taxonomy
Magnum Photos, Magnum, photographers, Magnum photographers, photo, Exhibitions, London, Elliott Erwitt, cooperative, New York, Paris, unique photography, photography experience, photographer members, Magnum events, photography agency, photography, icons.

Defination from the web:
Cooperative of photographers, founded in 1947. Also features editorial, members' list and their portfolio, event calendar, and a blog.