Eagerness, fervor, excessive strong feeling.
A wild or turbulent ferocity or fury.
An intense concentration, force or power.
Enthusiasm; keen enjoyment; relish; gusto.
The outer skin of a citrus fruit, used as a flavouring or garnish.
General vibrance of flavour.
The woody, thick skin enclosing the kernel of a walnut.
To scrape the zest from a fruit.
To make more zesty.