Webster's Revised Unabridged Dictionary · 1913

Quintuplet

Quintuplet , noun

[From Quintuple.]

1.
A collection or combination of five of a kind.
2.
Five children born in the same labor.
3.
(Music) A group of five connected notes; a turn of five notes.
4.
A cycle having five crank shafts and adapted for five riders, all of whom can assist in the propulsion.