Definition of "Tough" :

noun: a cruel and brutal fellow

noun: an aggressive and violent young criminal

noun: someone who learned to fight in the streets rather than being formally trained in the sport of boxing

adjective: feeling physical discomfort or pain (tough' is occasionally used colloquially for bad')

"He was feeling tough after a restless night."

adjective: substantially made or constructed

"A tough all-weather fabric."

adjective: making great mental demands; hard to comprehend or solve or believe

adjective: very difficult; severely testing stamina or resolution

"The competition was tough."

adjective: unfortunate or hard to bear

"A tough break."

adjective: resistant to cutting or chewing

adjective: physically toughened

"The tough bottoms of his feet."

adjective: not given to gentleness or sentimentality

"A tough character."

adjective: violent and lawless

"Tough street gangs."