- buffalo nut, elk nut, oil nut - oily drupaceous fruit of rabbitwood
--1 is a kind of fruit
--1 is a part of rabbitwood, buffalo nut, Pyrularia pubera - rabbitwood, buffalo nut, Pyrularia pubera - shrub of southeastern United States parasitic on roots of hemlocks having sparse spikes of greenish flowers and pulpy drupes
--2 is a kind of parasitic plant
--2 is a member of Pyrularia, genus Pyrularia
--2 has parts: buffalo nut, elk nut, oil nut