cow-tree noun 10forms 2 noun10 •Any of various South American trees which, when wounded, exude a rich milky liquid. •Any trees in several species. •Brosimum utile, native to Brazil and Venezuela •Brosimum utile, a tree of South America that yields a nourishing milky fluid when cut. •Couma macrocarpa of the family Apocynaceae, a tropical rain forest tree native to Colombia. •Couma macrocarpa in the family Apocynaceae, a tropical rainforest tree native to Colombia. •Gymnema lactiferum, native to Ceylon. •Gymnema lactiferum (Ceylon cow tree). •Manilkara bidentata, native to Brazil •Manilkara bidentata (massaranduba). formscow trees · cow-trees