myelin, myeline, medulla -- (a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers)
medulla oblongata, medulla, bulb -- (lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata); "the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning")
medulla -- (the inner part of an organ or structure in plant or animal)
(TTS Sound)
