The flat surface of a sundial on which the shadow of the gnomon is cast.
Mid 17th century; earliest use found in Sylvanus Morgan (1620–1693), arms painter and author.
英语词典包含464360条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。