I had to look that one up myself (I don't believe I've ever even heard of the town and I've lived in Tennessee most of my life). I'm assuming the people there go to Jackson for most of their shopping. It looks like it's way off the beaten path.
And according to Google it's spelled with two e's and one a. I only mention that in case someone else needs to look it up.
There is some information on the town here on the C-D site:
http://www.city-data.com/city/Trezevant-Tennessee.html Population listed: 888 (so yeah, it's a small place).