Since Bookeen has not implemented a "search in dictionary" function yet, I attach to this post a sample EPUB file that might be used to "emulate" the search function.
It contains the list of words, grouped by starting letter and 4-letters prefix, so that one can "navigate" through the EPUB, find the desired word, select it and have the dictionary definition displayed.
I attach the EPUB generated for the ENGLISH dictionary that I helped developing for SBF, based on the GNU Collaborative International Dictionary of English (despite being named "en.wikipedia.dict"). You can get it here:
DICT.IDX:
http://bit.ly/wfCrcK
DICT:
http://bit.ly/Ao8JjI
Usage (looking for "yerd"):
1) Open dictionary.v1.epub on the Odyssey, as any other EPUB file.
2) Select "Letter Y".
3) Select "YEAS - YIN" (as "yerd" falls into this interval).
4) Locate "yerd" and select it.
5) The dictionary should pop the definition of "yerd" up.
This test EPUB was generated by a Python script that will be merged into Penelope project, time permitting. Let me know what you think about it or should you have any suggestions/comments.