Zest (noun, verb)
zest [zest]

noun
1. keen relish; hearty enjoyment; gusto.
2. an agreeable or piquant flavor imparted to something.
3. anything added to impart flavor, enhance one's appreciation, etc.
4. piquancy; interest; charm.
5. liveliness or energy; animating spirit.
6. the peel, especially the thin outer peel, of a citrus fruit used for flavoring: lemon zest.

verb (used with object)
7. to give zest, relish, or piquancy to.

Synonyms
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4. spice, tang.

Origin: 1665-75; < French zest (now zeste) orange or lemon peel used for flavoring < ?

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