I. noun 1.
(Brit.) a tall drinking container, typically made of plastic, with straight sides and no handle.
(Brit.) a lipped cylindrical glass container for laboratory use.
‹literary› a large drinking container with a wide mouth.
[Archaeology] a waisted pot characteristic of graves of the Beaker folk.
– origin Middle English (in the sense ‘large drinking container’): from Old Norse bikarr, perhaps based on Greek bikos ‘drinking bowl’.