A system of functionally related neural structures in the brain that are involved in emotional behavior WordNet 3.0 & Open English WordNet

The limbic system, also known as the paleomammalian cortex, is a set of brain structures located on both sides of the thalamus, immediately beneath the medial temporal lobe of the cerebrum primarily in the forebrain. Wikipedia

Structures of the brain Wikidata

Part of the human brain involved in emotion, motivation, and emotional association with memory; includes amygdala, cingulate gyrus, fornicate gyrus, hippocampus, hypothalamus, mammillary body, nucleus accumbens, orbitofrontal cortex and parahippocampal gyrus. Wiktionary

Part of the human brain. Wiktionary (translation)