Definition of septuplet in English:
 septuplet
noun ˈsɛptjʊplɪtsɛpˈtjuːplɪt
1usually septupletsEach of seven children born at one birth.
 Example sentencesExamples
-  When she gave birth to septuplets, she became an instant heroine.
 -  A father whose wife gave birth to septuplets and had in the past lost two children has thanked God for the new additions to his family.
 -  Such excitement has not occurred since 1998, when the first known set of live septuplets occurred in the United States.
 -  You've heard of the quintuplets born in California and the septuplets in Iowa, but what about the mom who recently gave birth to 18 in Utah?
 -  When I sat down to watch the Academy Award nominations in my apartment, I felt as if I was birthing septuplets.
 -  We haven't seen this many reporters since that lady gave birth to septuplets.
 -  Most extremely high-order multiples, like the McCaughey septuplets, occur when the woman is given fertility drugs and her doctor fails to recognize how many eggs she has produced.
 -  Sierra and Dominic were having a little trouble with the septuplets, you might wanna plug your ears.
 -  She nodded, leading the septuplets inside.
 
2Music 
A group of seven notes to be performed in the time of four or six.
Origin
  
Late 19th century: from late Latin septuplus (see septuple), on the pattern of words such as triplet.