1. (noun)vanilla any of numerous climbing plants of the genusVanilla having fleshy leaves and clusters of large waxy highly fragrant white or green or topaz flowers
2. (noun)vanilla, vanilla extract a flavoring prepared from vanilla beans macerated in alcohol (or imitating vanilla beans)
4. (adj)vanilla flavored with vanillaextract "he liked vanilla ice cream"
5. (adj)vanilla plain 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"