The Open Dictionary

quadruplet

noun

UK/kwɒdˈruː.plət/
US/kwɑːˈdruː.plət/

Definitions of quadruplet noun

  1. Countable

    One of four offspring born to the same mother in a single birth event.

    • The couple was both thrilled and nervous upon learning they were expecting quadruplets.

    • Caring for quadruplets requires a lot of time, patience, and resources.

    • The quadruplets attend the same kindergarten and are often mistaken for twins.