a major part of the central nervous system which conducts sensory and motor nerve impulses to and from the brain; a long tubelike structure extending from the base of the brain through the vertebral canal to the upper lumbar region
the junction between two neurons (axon-to-dendrite) or between a neuron and a muscle; "nerve impulses cross a synapse through the action of neurotransmitters"
a poor densely populated city district occupied by a minority ethnic group linked together by economic hardship and social restrictions
formerly the restricted quarter of many European cities in which Jews were required to live; "the Warsaw ghetto"
any segregated mode of living or working that results from bias or stereotyping; "the relative security of the gay ghetto"; "no escape from the ghetto of the typing pool"
a remote or indirect consequence of some action; "his declaration had unforeseen repercussions"; "reverberations of the market crash were felt years later"