"Octuple" refers to something that is eightfold or multiplied by eight. It is often used in mathematics to describe a quantity that has been increased to eight times its original value. For example, if you have a single item and you octuple it, you will end up with eight items. In a different context, "octuple" can also refer to a group of eight, such as the Octuplets born to a single mother. This term gained popularity with the birth of the Gosselin octuplets in 2009, highlighting the challenges and joys of raising multiple children at once.