Definition of leaf cup in English:

noun

• 1Originally: (perhaps) a cup shaped like a leaf. In later use: a leaf folded and used as a cup, especially in Asia.

• 2Any of several plants of the American genus Polymnia (family Asteraceae), having each flower head in a cup of leaf-like scales; especially (more fully "white-flowered leaf cup") P. canadensis of eastern North America, a large perennial with lobed leaves (also called bear's-foot).