melkboom
/ˈmɛlkbʊəm/South African
noun
Either of two trees with milky sap: (a) a fig tree with white or pale grey bark, Ficus cordata, found in arid, rocky parts of south-western Africa; (b) the white milkwood, Sideroxylon inerme.
Origin
Early 20th century. From Afrikaans melkboom from melk + boom tree.