zest
- (noun): The outer skin of a citrus fruit, used as a flavouring or garnish.
- (noun): General vibrance of flavour.
- (noun): (by extension) Enthusiasm; keen enjoyment; relish; gusto.
- (noun): The woody, thick skin enclosing the kernel of a walnut.
- (verb): To scrape the zest from a fruit.
- (verb): To make more zesty.
- The orange zest gives the strong flavor in this dish.
- I add zest to the meat by rubbing it with a spice mixture before grilling.

