lava lamp

Etymology
A trademarked name registered by in 1963 for the item.

Noun

 * 1) A kind of lamp, typically used more for decoration than illumination, in which the gentle flow of randomly-shaped clumps of wax purportedly suggests the flowing of lava.

Translations

 * Azerbaijani: lava lampası
 * Estonian: laavalamp
 * Finnish:
 * French: lampe à lave
 * German:
 * Hungarian:
 * Icelandic: hraunlampi
 * Swedish:
 * Turkish: lava lambası