How do you say "I mean", as in "that is not what I mean" ? As in "You have misunderstood, what I mean is that...."
Actually,there is not a statement of 'I mean' in 'That is not what I mean'.

In Chinese, 'That is not what I mean.' is '那不是我的意思。'.

So, '我的意思' is just 'what I mean'.