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any one of six offspring produced at the same birth.
One of six children born at one birth.
sextuplet/sex·tup·let/ (seks-tup´let) any one of six offspring produced at the same birth.
1. One of six offspring born in a single birth.
2. A group or combination of six associated by common properties or behavior.
3. Music A group of six notes having the time value of four notes of the same kind.
Etymology: L, sex, six
one of six children born of a single pregnancy.
One of six children carried through a single pregnancy and born together.
[L. sextus, sixth + -uplet]