But surely if the Mesher is called Gmesh (for e.g.) that doesn't change whatever the language, so a G is acceptable here. I agree that generally icons are more universal but in this case it seems appropriate....and very obvious.
I look forward to more rubix with Kanji, cryllics, etc which would be cool too.
Personally, if there is only a couple of meshers then the current setup with the rubix cube on the toolbar is ok, but I think it would work on a drop-down menu too if there are more options - to reduce clutter.
An alternative Icon that might work for the generic Mesh drop-down menu could be a partial rubix with a 2 or 3 tiny cubes floating down to join it as though it was getting assembled....??