I wonder what he is.
(Random House Dictionary's #2, not from the linked online-version but from its paper version)
I suppose the sentence would mean ‘I wonder what sort [type] of person he is’ as Mister StoneyB says. But the Korean translating version of the dictionary interprets it as: ‘I wonder what job he does’ or ‘I wonder from where he comes’. Could the translating version’s interpretation be proper?