quadruplet
qua.dru.plet \kwa:-'dr*p-l*t, -'dru:p-; 'kwa:d-r*p-\ n 1: one of four offspring born at one birth 2: a combination of four of a kind
Webster's English Dictionaryqua.dru.plet \kwa:-'dr*p-l*t, -'dru:p-; 'kwa:d-r*p-\ n 1: one of four offspring born at one birth 2: a combination of four of a kind