The term ONE SPARRING is a combination of two words, the first being 'ONE' and the second being 'sparring'. The crossword solution for this term is BOXER, which is a five-letter word. A BOXER is someone who participates in the sport of boxing, which involves two opponents engaging in physical combat with their fists. Sparring is a type of practice boxing match that is used to help boxers improve their skills and techniques. Therefore, the term ONE SPARRING can be interpreted as ONE BOXER engaging in a sparring match.