Answer:
What has 4 fingers and a thumb, but is not living?
What is it that you ought to keep after you have given it to someone else?
Nothing specific, but more than a few. This many clustered, together will do.
Timid or weak people are said to not have these.
A man goes out in heavy rain with nothing to protect him from it. His hair doesn't get wet. How does he do that?
As round as an apple. As deep as a cup. All the king's horses can't pull it up.