tubocurarine chloride

[tōō′bō-kyu-rärēn′, -rĭn]
n.
  1. An alkaloid that competes with acetylcholine for myoneural receptors, blocks ganglionic transmission, and releases histamine; it is used to relax skeletal muscles during surgical operations.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.