Adjective
1. referring to the system comprising the hippocampus, parahippocampal gyrus, cingulate gyrus, fornix, and multiple subcortical structures including portions of hypothalamus and thalamus; important in memory and emotion. (strokecenter.org)
2. Relating to the limbic system. (wiktionary.org)
3. Pertaining to a limbus or margin, forming a border around. (biology-online.org)
Word origin: From French limbique (1878, Broca), from limbe, from Latin limbus “edge.”