brattery

plural bratteries

1. countableinformalA collection of brats; a children's nursery, etc.

   Whole bratteries of little Aarons and Abrahams, who invariably after two years old, but sometimes earlier, develop the noses and the expressions of their elders, are also airing at the doors.

   1899, Blackwood's Magazine, volume 165, page 676

   1 more example

   I should esteem myself in luck, were the nuisances of this seaport confined only to two senses; but, alas! the apartment above my head proves a squalling brattery, and the sounds which proceed from it are so loud and frequent, that a person might think himself in limbo, without any extravagance.

   1834, William Beckford (novelist), (Please provide the book title or journal name)

2. informaluncountableBrattish behaviour.