Nouns

(n)vanillaany of numerous climbing plants of the genus Vanilla having fleshy leaves and clusters of large waxy highly fragrant white or green or topaz flowers
(n)vanilla, vanilla extracta flavoring prepared from vanilla beans macerated in alcohol (or imitating vanilla beans)
(n)vanillaa distinctive fragrant flavor characteristic of vanilla beans

Adjectives

(a)vanillaflavored with vanilla extract“he liked vanilla ice cream”
(s)vanillaplain and without any extras or adornments“the most common type of bond is the straight or plain vanilla bond”, “the basic car is known as the vanilla version”