I think you might be looking for cruet.
It is called a cruet.
A cruet is a glass container used for Oil and Vinegar for salad dressing made at the table. They are usually glass and kind a squatty with a glass stopper and handle.
Phial
Flacon
Usually it was held in a small glass bottle. Or sometimes there was a small compartment in the desk that you could put the glass bottle in and then it held the ink.
Um... beer?
A scent bottle is a flacon, the root of the word is French
Put them in the freezer overnight. The next day lower the large bottle in very warm water without allowing warm water to contact the small bottle. The overnight cold will contract the small bottle and the warmth will expand the large bottle. They may be easy to separate that way.
Espresso is traditionally served in a small cup called a demitasse, accompanied by a small glass of water.
Star Tonight - 1955 A Small Glass Bottle 2-41 was released on: USA: 7 June 1956
Advocaat is traditionally served in a small tulip-shaped glass or a shot glass, neat or over ice. It can also be used in cocktails such as the Snowball.
A phial (vial in the US) may be what you are after.