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.
ayon kay bantarctic leech ika-05 ng Hulyo, 2010
1 more definition
acronym for bitter and twisted
The girl guides ran from the yard as the old bat screamed at them.
ayon kay Sir Arthur ika-22 ng Nobyembre, 2012