What is Lobe ?
Lobe is (noun) 1. the soft fleshy part at the bottom of the ear He has a ring in his right ear lobe. 2. a round section of an organ, such as the brain, lung or liver The right lung has three lobes, the left only two. The surgeon could see that the right frontal lobe of the brain was affected.
source: Easier English, Student Dictionary Upper Intermediate Level