The Text Encoding Initiative Consortium has a very well developed XML DTD and
Schema for dictionaries, words, definitions, etc. I know one of the ideas for
the wiktionary redesign was simplicity, but this could be a good building block
for some of the back-end stuff, or even exporting some of the information out
to users.
[1] -
http://www.tei-c.org/
--
brian suda
http://suda.co.uk