Sdict viewer runs natively on Maemo and has many different language dictionaries. I use it for eng-jap / jap-eng.

Bad thing about it, is that you have to install Maemo CJK for Chinese Japanese and Korean input/support. Installing CJK will remove your Maemo keyboard and you'll have to load SCIM input and the matchbox keyboard which sucks horribly.

You know what, now that I think about it, I might install GarnetVM and Pleco.

lol nevermind.