<<It has now come back into the English language, with a meaning you would be hard pressed to establish from its constituent parts.>>

Walkman is a registered trade mark of the Sony Corp - its a bit naughty to use it when you mean "portable personal stereo". Not quite as elegant I agree. Sorry, didnt mean to be a trademark-Nazi, but I don't think that Walkman has yet gone the way of refrigerator, cellophane, etc, and become generic.