Especially in the names of animals: having grey cheeks.
Mid 17th century; earliest use found in Joshua Poole (c1615–c1656), schoolmaster and author. From grey + cheeked.
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。