From King Dictionary of Contemporary Englishbutchbutch /bʊtʃ/ adjective informal 1 HBHMANa woman who is butch looks, behaves, or dresses like a man2 HBHMANa man who is butch seems big and strong, and typically male
Examples from the Corpus
butchRobin Williams plays Armand, the relatively butch half of a gay couple.As a boy you were so butch it hurt.
Origin butch (1900-2000) Butch name given to men or boys who behave as if wanting to fight, probably from butcher