Add a feature to wikipedia and wiktionary modules (including .ety if possible) to allow people to search for words on other languages' wikipedias and wiktionaries.  E.g., the following pages should be easy to get

• http://fr.wikipedia.org/wiki/Solution
• http://fr.wiktionary.org/wiki/solution

with commands like

• .wik.fr Solution or .wik fr Solution
• .w.fr solution or .w fr solution

(whatever you deem to make the most sense).

Also, make sure unicode is handled right!