The Collaborative International Dictionary of English v.0.48:
Peppery \Pep"per*y\, a. 1. Of or pertaining to pepper; having the qualities of pepper; hot; pungent. [1913 Webster] 2. Fig.: Hot-tempered; passionate; choleric. [1913 Webster]WordNet (r) 3.0 (2006):
peppery adj 1: having the piquant burning taste of peppers; "corn chips with peppery salsa"