1Imperfect speech, especially the repetition of meaningless sounds by babies.
Mid 17th century: from Latin lallatio(n-), from lallare 'sing a lullaby'.
英语词典包含464360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。