pod·o·phyl·lin 
(pŏd′ə-fĭlĭn)
(pŏd′ə-fĭlĭn)n.
A bitter-tasting resin obtained from the dried root of the mayapple and used in medicine as a caustic.
[New Latin Podophyllum, genus name (Greek pous, pod-, foot; see ped- in the Appendix of Indo-European roots + Greek phullon, leaf; see bhel-3 in the Appendix of Indo-European roots) + -IN.]