A person who obtains things by force; a thug or bully.
To endure.
To toughen.
Strong and resilient; sturdy.
(of food) Difficult to cut or chew.
Rugged or physically hardy.
Stubborn.
(of weather etc) Harsh or severe.
Rowdy or rough.
(of questions, etc.) Difficult or demanding.
Undergoing plastic deformation before breaking.
Used to indicate lack of sympathy