Lamp Used in Car Headlights
Puzzle 20 of Alice in Wonderland Piece of Cake Pack
Question is: Lamp Used in Car Headlights
and the answer is: XENONBULB
Word Meaning:
XENON — The chemical element (symbol Xe) with an atomic number of 54. It is a colorless, odorless, unreactive noble gas, used notably in camera flash technology.
Definitions from Wiktionary.