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