quintuplet
/ˈkwɪntjʊplɪt/noun
1
- （一般作quintuplets）each of five children born to the same mother at one birth五胞胎之一。
2
- Music a group of five notes to be performed in the time of three or four【乐】五连音（指在三拍或四拍时间内均等地奏出的五个音）。
词源
late 19th cent.: from QUINTUPLE, on the pattern of words such as triplet.