Late 19th century. From Tswana mokoro (1856 or earlier in Noka ea Mokoròn (lake of boats) recorded as a name (for Lake Ngami)). Compare.
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。