A brace and bit is a simple hand-powered type of which tool?

What do a boxer, a surgeon and Rita Hayworth in a famous "Gilda" number all wear? In professional boxing, which weight class has an upper limit of 112 pounds? What does a Boy Scout wear on a sash to show the ones he has earned? Which word can mean a boyfriend or a fop and begins the title of a 1924 French Foreign Legion novel? A brain disease is named for Hans Creutzfeldt and which other German neurologist who described it around 1920? Which body part also names a branch of an organization or an inlet branching off a river or sea? What does "WWW" stand for in web addresses? Which branch of the U.S. military was part of the Army before becoming independent in 1947?