moulin; vertical shaft in a glacier
A glaciology term for a roughly vertical hole or shaft in a glacier through which meltwater can drain.
A large moulin has opened on the surface of the glacier.
Meltwater flows through the moulin down to the bottom of the glacier.
Used when referring to a specific site or location in a glacier, rather than the thing as a countable object.
Only the katakana form ムーラン and the gloss 'moulin'; no language-of-origin information is available, so the precise borrowing history is not specified here.