(In the United Kingdom) a 24-hour period commencing at 9.00 a.m. GMT on which there is at least 0·01 inch or 0·2 mm of recorded rainfall.
Early 20th century; earliest use found in The Times.
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。