the world > matter > properties of materials > temperature > coldness > extinguishing fire > [noun] > fire-fighting > a substance or apparatus for extinguishing > bottle containing chemical (2)
A glass bottle containing a chemical, designed to be thrown into a fire in order to extinguish it. Now historical.
A glass receptacle to be thrown in order to burst and disperse its contents; e.g. drain grenade, one filled with a strong-smelling fluid, to be used…