noun
The outer skin of a citrus fruit, used as a flavouring or garnish.
General vibrance of flavour.
(by extension) Enthusiasm; keen enjoyment; relish; gusto.
(rare) The woody, thick skin enclosing the kernel of a walnut.
(slang, LGBTQ, derogatory) State of being a flamboyant or effeminate homosexual.
verb
(cooking) To scrape the zest from a fruit.
To make more zesty.