The Collaborative International Dictionary of English v.0.48:
Warty \Wart"y\, a. 1. Having warts; full of warts; overgrow with warts; as, a warty leaf. [1913 Webster] 2. Of the nature of warts; as, a warty excrescence. [1913 Webster] Warty egg (Zool.), a marine univalve shell (Ovulum verrucosum), having the surface covered with wartlike elevations. [1913 Webster]