1) Bout with padded weapons 2) Fight play 3) Sham battle 4) Sleepover activity 5) Struggle to use cushions 6) Warner Music Group single 
A pillow fight is a common game mostly played by young children (but also by teens and adults) in which they engage in mock physical conflict, using pillows as weapons. Many times pillow fights occur during children`s sleepovers. Since pillows are often soft, injuries rarely occur. The heft of a pillow can still knock a young person off balance, ....
[n] - a child`s game of fighting with pillows
noun a child`s game of fighting with pillows