Quintuplet
01
五つ子, 五
the cardinal number that is the sum of four and one
02
五つ子, 五つの組
a set of five similar things considered as a unit
03
五つ子, 同じ妊娠で同時に生まれた5人の子供の1人
one of five children born at the same time from the same pregnancy
五つ子, 五
五つ子, 五つの組
五つ子, 同じ妊娠で同時に生まれた5人の子供の1人