vanilla (Adjective) — Flavoured with vanilla extract. ex. "he liked vanilla ice cream"
vanilla (Adjective) — Plain and without any extras or adornments. ex. "the most common type of bond is the straight or plain vanilla bond" ex. "the basic car is known as the vanilla version"
vanilla (Noun) — Any of numerous climbing plants of the genus Vanilla having fleshy leaves and clusters of large waxy highly fragrant white, green or topaz flowers.
vanilla (Noun) — A flavouring prepared from vanilla beans macerated in alcohol (or imitating vanilla beans).
vanilla (Noun) — A distinctive fragrant flavour characteristic of vanilla beans.