TOUGH

Definition of TOUGH

(noun)someone who learned to fight in the streets rather than being formally trained in the sport of boxing
(noun)an aggressive and violent young criminal
(noun)a cruel and brutal fellow
(adj)very difficult; severely testing stamina or resolution
(adj)substantially made or constructed
(adj)violent and lawless
(adj)feeling physical discomfort or pain (`tough' is occasionally used colloquially for `bad')
(adj)unfortunate or hard to bear
(adj)making great mental demands; hard to comprehend or solve or believe
(adj)not given to gentleness or sentimentality
(adj)physically toughened
(adj)resistant to cutting or chewing