1. A lesbian woman who has some sexual/romantic interest in men, but is still primarily interested in women. From the combination of the words "bisexual" and "lesbian".
2. A bicurious lesbian.
"I love my girlfriend, but I have a such a big crush on Will Smith. I think I'm a blesbian!"
A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.