Appoggiatura

Appoggiatura - \ə-ˌpä-jə-ˈtu̇r-ə\ - noun
(1)an embellishing note or tone preceding an essential melodic note or tone and usually written as a note of smaller size (Merriam-Webster)
(2)"grace note" (57 Timequake); word or phrase characteristic to an individual's conversational language