Definitions
1.adjectiveStrong and resilient; sturdy."The tent, made of tough canvas, held up to many abuses."
2.adjective(of food) Difficult to cut or chew."To soften a tough cut of meat, the recipe suggested simmering it for hours."
3.adjectiveRugged or physically hardy."Only a tough species will survive in the desert."
4.adjectiveStubborn."He had a reputation as a tough negotiator."
5.adjective(of weather etc) Harsh or severe.
6.adjectiveRowdy or rough."A bunch of the tough boys from the wrong side of the tracks threatened him."
7.adjective(of questions, etc.) Difficult or demanding."This is a tough crowd."
8.adjectiveUndergoing plastic deformation before breaking.