Home Dee Dee Word of the Day – May 3 – Lunette Dee Dee Word of the Day – May 3 – Lunette By Staff mB - May 3, 2012 1069 Noun: Lunette (loo-NET) Definition: Something that has the shape of a crescent or half-moon. Sample sentence: The door was topped with a lunette of small, colored panes of glass.