va·nil·la 
(və-nĭlə)
(və-nĭlə)n.
1. Any of various tropical American vines of the genus Vanilla in the orchid family, especially V. planifolia, widely cultivated for its long narrow seedpods, which yield an aromatic substance used especially as a flavoring.
2. The seedpod of this plant. Also called vanilla bean.
3. A flavoring extract prepared from the cured seedpods of this plant or produced synthetically.
adj.
1.
a. Flavored with vanilla: vanilla pudding.
b. Scented with or smelling like vanilla: vanilla perfume.
2. Lacking adornments or special features; basic or ordinary: "a delicious twist to a vanilla plot" (Ian O'Connor).
3. White or off-white in color: a vanilla suit.
4. Slang Relating to or engaging in sexual activity that is regarded as conventional or unadventurous; not kinky, sadomasochistic, or fetishistic.
[Obsolete Spanish vainilla, diminutive of vaina, sheath (from the shape of its seedpods), from Latin vāgīna.]