n 1  cap  :  a very large genus (the type of the family Conidae) of tropical marine snails comprising the cones and including many beautiful and harmless forms and a few chiefly in the southwest Pacific that are highly dangerous because they are capable of biting with the radula and injecting a paralytic venom that has been known to cause death in humans  2  pl  co*ni   :  CONUS ARTERIOSUS .
 
 
 
Similar sounding terms:  Ca·nis  CNS  cu·ne·us  cun·nus 
 
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