Definition of milkwood:
(n) :
Any of a number of trees with milky sap:
(n) :
(South Africa) Sideroxylon inermis, the white milkwood
(n) :
(South Africa) Mimusops zeyheri, the Transvaal red milkwood.
(n) :
(South Asia, Australia) Alstonia scholaris (scholar tree, milky pine), and other species in the genus Alstonia.
(n) :
Trimeris scaevolifolia, a tree endemic to the Atlantic island of St. Helena.
(n) :
Many species of the genus Tabernaemontana, that are native to the Americas.