1. [Supposed to be a cant word, from betty, for Elizabeth, as such an instrument is also called Bess (i. E, Elizabeth) in the Canting dictionary of 1725, and jenny (i. E, Jane)] a short bar used by thieves to wrench doors open.
alternative forms: bettee] The powerful betty, or the artful picklock. (Arbuthnot)
2. [Betty, nickname for Elizabeth] a name of contempt given to a man who interferes with the duties of women in a household, or who occupies himself with womanish matters.
3. A pear-shaped bottle covered round with straw, in which olive oil is sometimes brought from Italy; called by chemists a florence flask.