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laser

Definition

noun: a device that produces a narrow and powerful beam of light that has many special uses in medicine, industry, etc.
noun: a device that utilizes the natural oscillations of atoms or molecules between energy levels for generating a beam of coherent electromagnetic radiation usually in the ultraviolet, visible, or infrared regions of the spectrum
often used before another noun
synonyms: optical maser

Examples

doctors using a 'laser' to perform delicate eye surgery

Movie quotes

(..) But, Mom, I thought you'd like it. Yes, Mrs. Simpson, we can remove your son's tattoo. It's a simple routine involving lasers. - Cool! - However, it is rather expensive, and we must insist on a cash payment up front. - Cash? (..)
1989 TvShow: The Simpsons Title: Simpsons Roasting on an Open Fire Season: 1 Episode 1