Any annoying post-menopausal woman, but especially one who applies a considerable amount of make-up and scares small children with her appearance.
I try to be nice to the old bat.
מאת bantarctic leech 5 ביולי, 2010
1 more definition
acronym for bitter and twisted
The girl guides ran from the yard as the old bat screamed at them.
מאת Sir Arthur 22 בנובמבר, 2012