D defs.my
Entry 1 sense Webster, 1913

Leyden jar

/(lī"d'n jär"; 277)/ · Ley·den jar · IPA /ˈlaɪdən ˌdʒɑɹ/
01 n. A glass jar or bottle used to accumulate electricity. It is coated with tin foil, within and without, nearly to its top, and is surmounted…
  1. 1.
    A glass jar or bottle used to accumulate electricity. It is coated with tin foil, within and without, nearly to its top, and is surmounted by a brass knob which communicates with the inner coating, for the purpose of charging it with electricity. It is so named from having been invented in Leyden, Holland.(Elec.)