What does "vanilla" mean?

Vanilla: The long podlike capsules of Vanilla planifolia, and V. claviculata, remarkable for their delicate and agreeable odor, for the volatile, odoriferous oil extracted from them; also, the flavoring extract made from the capsules, extensively used in confectionery, perfumery, etc. Note: As a medicine, vanilla is supposed to possess powers analogous to valerian, while, at the same time, it is far more grateful. Cuban vanilla, a sweet-scented West Indian composite shrub (Eupatorium Dalea). -- Vanilla bean, the long capsule of the vanilla plant. -- Vanilla grass. Same as Holy grass, under Holy.