The adjective limbic describes a brain system that is largely responsible for regulating emotions. The limbic system is also where we form a lot of our memories.
Limbic derives from the Latin limbus, or "edge," and it's used to describe anatomical structures that border another part. In the case of the brain, the limbic system sits along the edge of both sides of the thalamus. When it comes to emotions, your limbic system is crucial, since it regulates how you feel and how you react to those feelings, as well as affecting the way you learn, remember, and even how you identify odors.