bufagin

noun
bu·​fa·​gin | \ˈbyü-fə-jən \

Medical Definition of bufagin 

: a toxic steroid C24H34O5 obtained from the poisonous secretion of a skin gland on the back of the neck of a large toad (Bufo marinus) that resembles digitalis in physiological activity also : any of several similar substances from secretions of other toads — compare bufotoxin

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