brat /bræt/
noun [countable] informal[
Date: 1500-1600;
Origin: Perhaps from brat 'rough or torn piece of clothing' (10-20 centuries), from Old Irish bratt 'cloak']
1. a badly behaved child:
a spoiled brat2. army/navy/military etc brat American English a child whose family moves often, because one or both parents work for the army, navy etc
—bratty adjective [TahlilGaran] Dictionary of Contemporary English ▲