A "trouser role" refers to a theatrical role traditionally played by a woman, where the character is male. This practice is common in opera and musical theater, allowing female performers to showcase their vocal and acting talents in roles that would typically be portrayed by men. Historically, trouser roles have been significant in various performances, such as those in the works of Wolfgang Amadeus Mozart or George Frideric Handel. These roles often involve young male characters, allowing for a unique blend of gender expression and artistic interpretation on stage.