Bet″ty (�), n. 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. [Written also 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. Bartlett.