What is the Latin word for 'lamp'?

The Latin word for 'lamp' is indeed "lucerna." This term specifically refers to a small oil lamp that was commonly used in ancient Rome and throughout the Roman Empire to provide light. The word is derived from the root "luc-" which relates to light or shining.

In contrast, "lucens" is an adjective meaning 'shining' or 'bright,' but it does not refer to a physical object like a lamp. "Ignis" translates to 'fire,' which is more general and refers to the phenomenon of combustion itself rather than a lamp or light source. "Lumen" means 'light' or 'gleam,' and while it relates closely to illumination, it is not specifically a lamp. Thus, among these options, "lucerna" is the accurate term for lamp in Latin, highlighting a specific item used for producing light rather than a general concept of light or brightness.