mo (1)youdaoicibaDictYouDict[mo 词源字典]
colloquial shortening of momentum, by 1896.[mo etymology, mo origin, 英语词源]
mo (2)youdaoicibaDictYouDict
representing U.S. black pronunciation of more, by 1902; it was an acceptable variant form of more in the Middle Ages and has roots in Old English; see more.