1.) 60s. Nickname or reference to your mom. "Geez, how long did your old lady ground you?" 2.) 70s. This is a term of endearment used to describe a wife, girlfriend or significant other. "The old lady is going to kill me if I don't get this lawn mowed." 3.) Per Captain Obvious: an elderly woman.
A heroic woman of great stature, courage and strength. She exudes fearlessness. Dating back to the times of antiquity, if a woman surpassed the expectations of her gender she was honored with the title and word.
2.) A loud, overbearing woman.