hors-d'œuvre

Noun

 * 1)  appetizer, starter, hors d'oeuvre small, light, and usually savory first course in a meal
 * 2)  extension, appurtenance room of a building that is not part of the main structure
 * 3)  digression act of straying from the main subject that could be removed from the text without detriment to the main plot
 * 4)  addendum, extraneity, superfluity, accessory, hors-d'oeuvre something additional or secondary to the main thing

Adjective

 * 1)  stand-alone standing apart from the main body of a building
 * 2)  off-topic, digressive not relating directly to the subject at hand