To adorn unnecessarily something already beautiful. The expression is a condensation of Shakespeare's metaphor in King John: "To gild refined gold, to paint the lily ... is wasteful and ridiculous excess." i.e., you wouldn't need to add gold to a beautiful lily.
Jennilyn is so beauitful that putting on makeup is just Gilding the Lilly.
by _Andy_ June 23, 2006
Can you define these popular missing words?