If you want an eInk device, my recommendation is one of the new Sonys. As ProfCrash said, it's just a double tap on the word to look it up. This brings up a small window at the bottom of the screen with the pronunciation and the definition. If you want more information, there's a button you can press to bring the dictionary up to full screen.
Very nice! I find myself using it all the time--even for words I'm pretty sure I know the definition for.
dordale
