The lower of the two millstones, which remains stationary, and is exceptionally hard; usually figurative or in figurative context.
Mid 16th century; earliest use found in The Bible and Holy Scriptures.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。