Late 19th century; earliest use found in Defiance (Ohio) Democrat. From pit + -er. In later use also partly from pit + -er.
Early 19th century; earliest use found in The Edinburgh Review. Either shortened from pitter-patter, or variant of patter.
英语词典包含243303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。