foreign body? what does it mean?

answers1: Foreign Body is something that originates outside of the
body but which has somehow entered the body. For example a coin or
marble swallowed by a small child would be considered a foreign body.
answers2: anything that is not part of the human body <br>
<br>
"body" = thing
answers3: In this context, it means something that is not naturally
found in the human body. An object from outside the body, or 'foreign'
to it. A piece of shrapnel for instance.
answers4: What da hell are you talkin' about