1jar

(jar )

[Fr. jarre, ult. fr. Arabic jarrah, earthen water vessel]
A dome-topped container made of glass, plastic, or other sturdy material, used as a protective cover or as a pressurized container when the opening is properly sealed. It is usually taller than it is wide and may be cylindrical, square, or another shape.

bell jar

A glass vessel with an opening at only one end.