Who/What was Tom Bombadil

[zifnab]

tom is a miar very much like gandalf. he owns one of the rings and is very powerful.

I didnt know Tom had a ring, what kind was it, what was its power. It seems that he wasnt very interested in The Master Ring when Frodo was there. And it seemed that the ring had no power over him, when he put it on, or even the desire to have it. I think he actually laughed at it! It seems to me that Tom didnt really need a ring, all he had to do was sing a little song to get the job done.