This document provides definitions for various terms related to medieval art and architecture. It defines architectural elements like the capital, baptistry, and fleur-de-lis symbol. It also defines artistic motifs like evangelist symbols, Greek key patterns, and gargoyles. Additionally, it defines structural components of buildings like the lancet window, nave, and pinnacles that decorate spires. The glossary offers concise explanations of over a dozen key terms from medieval art and architecture.