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.
Excerpt - Dlisted.com
When a stunt queen is forced to step up her Creativity, Uniqueness, Nerve and Talent to stay relevant, because the next new Diva will steal the scene with 12 million views and a mic drop.