n 1 a  cap  :  a genus of poisonous herbs (family Umbelliferae) that have spotted stems, large divided leaves and white flowers and that include the poison hemlock  b  :  a plant of the genus Conium  2  :  the dried full-grown but unripe fruit of the poison hemlock containing coniine and its methyl derivative and used as a narcotic and sedative .
 
   
 
Similar sounding terms:  CNM 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.