Gas that causes severe irritation to the eyes or respiratory system, used chiefly in riot control to force crowds to disperse; tear gas.
1930s; earliest use found in Piqua (Ohio) Daily Call.
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。