The term 'ringmaster' is used to describe a person who is in charge of a circus or other performance. This person is responsible for introducing the acts, keeping the audience entertained, and ensuring that the show runs smoothly. The crossword solutions for this term are REFEREE (7 letters), REF (3 letters), JEWELER (7 letters), EMCEE (5 letters), and BOXER (5 letters). A REFEREE is someone who officiates a sporting event, while a REF is a shortened version of the same word. A JEWELER is someone who designs and sells jewelry, while an EMCEE is a master of ceremonies at a formal event. Finally, a BOXER is someone who participates in the sport of boxing.