What is "florence flask"

Flask \Flask\, n. [AS. flasce, flaxe; akin to D. flesch, OHG. flasca, G. flasche, Icel. & Sw. flaska, Dan. flaske, OF. flasche, LL. flasca, flasco; of uncertain origin; cf. L. vasculum, dim. of vas a vessel, Gr. ?, ?, ?. Cf. Flagon, Flasket.]

1. A small bottle-shaped vessel for holding fluids; as, a flask of oil or wine.

2. A narrow-necked vessel of metal or glass, used for various purposes; as of sheet metal, to carry gunpowder in; or of wrought iron, to contain quicksilver; or of glass, to heat water in, etc.

3. A bed in a gun carriage. [Obs.]
   --Bailey.

4. (Founding) The wooden or iron frame which holds the sand, etc., forming the mold used in a foundry; it consists of two or more parts; viz., the cope or top; sometimes, the cheeks, or middle part; and the drag, or bottom part. When there are one or more cheeks, the flask is called a three part flask, four part flask, etc. Erlenmeyer flask, a thin glass flask, flat-bottomed and cone-shaped to allow of safely shaking its contents laterally without danger of spilling; -- so called from Erlenmeyer, a German chemist who invented it. Florence flask. [From Florence in Italy.]

   1. Same as Betty, n., 3.

   2. A glass flask, round or pear-shaped, with round or flat bottom, and usually very thin to allow of heating solutions.

      Pocket flask, a kind of pocket dram bottle, often covered with metal or leather to protect it from breaking.

Florence \Flor"ence\, n. [From the city of Florence: cf. F. florence a kind of cloth, OF. florin.]

1. An ancient gold coin of the time of Edward III., of six shillings sterling value.
   --Camden.

2. A kind of cloth.
   --Johnson.

   Florence flask. See under Flask.

   Florence oil, olive oil prepared in Florence.

Betty \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.

   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. [U. S.]
   --Bartlett.

A Florence flask is a type of flask used as an item of laboratory glassware. It is used as a container to hold liquids. A Florence flask has a round body, a single long neck, and often a flat bottom. It is designed for uniform heating, boiling, distillation and ease of swirling; it is produced in a number of different glass thicknesses to stand different types of use. They are often made of borosilicate glass for heat and chemical resistance. Traditional Florence flasks typically do not have a ground glass joint on their rather longer necks, but typically have a slight lip or flange around the tip of the neck. A common volume for a Florence flask is 1 litre.