nerve block

Regional nerve blockade, or more commonly nerve block, is a general term used to refer to the injection of local anesthetic onto or near nerves. Nerve blocks are used to help control pain, but also offer diagnostic benefits by helping to identify specific nerves as pain generators.
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Nerve block n. Interruption of the passage of impulses through a neuron by the injection of alcohol or an anesthetic. nerve block, n 1. [more]Nerve block - Community and Resources

A procedure in which medicine is injected directly into or around a nerve or into the spine to block pain.