1) Boxing 2) Contact sport 3) Fighting with the fists 4) Fisticuffs 1) Boxing 
• (n.) The practice of boxing, or fighting with the fist.
Boxing of the 18th and 19th centuries, bare fisted and with grappling allowed as nature intended. Studied by some members and a favourite with our unarmed instructor Mr Crawley.
Pu'gil·ism noun [ Latin pugil a pugilist, boxer, akin to pugnus the fist. Confer Pugnacious , Fist .] The practice of boxing, or fighting with the fist. 
Pugilism is a formal alternate name for boxing [Latin pugil, ?boxer?]
pugilism The skill, practice, and sport of fighting with the fists; boxing.
the art or practice of fighting with the fists; boxing.