from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A cholinergic drug, C7H17ClN2O2, that acts principally by stimulating the parasympathetic nervous system and is used in the form of its chloride to treat urinary retention.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A parasympathomimetic choline carbamate that selectively stimulates muscarinic receptors without any effect on nicotinic receptors.
Perhaps beth- (blend of beta and methyl) + -ane + chol(ine).(American Heritage® Dictionary of the English Language, Fourth Edition)