bu·fo·tox·in noun \-ˈtäk-sən\
: a toxic steroid C40H60N4O10 obtained from the skin glands of the common toad of Europe (Bufo vulgaris) that resembles digitalis in physiological activity and yields bufotalin on hydrolysis; also : any of several similar steroids from the secretions of other toads—compare bufagin
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