Zest n. \'zest\ 1. lively excitement : a feeling of enjoyment and enthusiasm; 2. a lively quality that increases enjoyment, excitement, or energy; 3. small pieces of the skin of a lemon, orange, or lime that are used to flavor food. use the dictionary entry to determine which of the following sentences uses the third meaning of the multiple-meaning word zest. a: martha's energy and zest had us all cheering before too long. b: the recipe says to add two teaspoons of zest and keep stirring.*** c: as i approached the bustling concert hall, it seemed like everyone was feeling the same zest i was. d: sarah's feeling of zest left her lying on the couch all day.