Luma-bulb

A luma-bulb was a type of device that was a source of light. At one point during the holiday of Life Day, the Wookiee Chewbacca unscrewed a luma-bulb from his freighter, the Millennium Falcon, with it squeaking like a root-mouse as it was removed. His companion, Han Solo, protested, but Chewbacca had done it for a reason: the luma-bulb would replace a broken Life Day Orb for the Tree of Life.

Text and facts from the “Luma-bulb” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.