Japanese for rain. Here is the Kanji:

          ############
               #
      ####################
      #        #         #
      #  ###   #   ###   #
      #        #         #
      #  ###   #   ###   #
      #        #        ##
      #        #         #               
                         

Scholars feel that the:

   _____
   |   |
   |   |

...represents the shape of a cloud while the dots represent rain and the vertical line in the center represents the concept of falling.

Also pronounced U (as in uki, the rainy season) or ama- (as in amagumo, a rain cloud).

"Advanced Metal Evaporated" is a format used in the AIT 8mm tape cartridge designed by Sony for data storage. This formulation relies on cobalt for it's magnetic layer with a hard DLC carbon coating.