<Ul> <Li> Another popular alternative theory concerning the physical "legs," or side curtains, of the theatre proposes that the company of actors should rush onstage through the curtains to take a considerable amount of bows, thus "breaking a leg (side curtain)" in the process . </Li> <Li> To get a leg up, and catch your big / lucky break . </Li> </Ul> <Li> Another popular alternative theory concerning the physical "legs," or side curtains, of the theatre proposes that the company of actors should rush onstage through the curtains to take a considerable amount of bows, thus "breaking a leg (side curtain)" in the process . </Li> <Li> To get a leg up, and catch your big / lucky break . </Li> <P> From the dual meaning of cast, where it can mean a mold used to support a broken leg, as well as the members of a theatre production . "May you get into the cast ." </P>

Where does the term black leg come from