A piece of orange or lemon peel, or the aromatic oil which may be squeezed from such peel, used to give flavor to liquor, etc.
- Flavor or interest; piquancy.
- The outermost part of the rind of an orange, lemon, or other citrus fruit, used as flavoring.
- Spirited enjoyment; gusto: "At 53 he retains all the heady zest of adolescence” ( Kenneth Tynan).
- To give zest, charm, or spirit to.