dragon lady

1. A powerful or domineering woman.
2. A dangerous and seductive woman; a femme fatale.

A domineering or belligerent woman, as in They called her the neighborhood dragon lady--she was always yelling at the children. This slangy term was originally the name of a villainous Asian woman in Milton Caniff's popular cartoon strip Terry and the Pirates (1934-1973), which ran in many newspapers. It was transferred to more general use in the mid-1900s.