n.
Pronunciation: ' l ā -z ə r
Function: noun
Usage: often attrib
Etymology: l ight a mplification by s timulated e mission of r adiation
Date: 1957
1 : 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
2 : something resembling a laser beam in accuracy, speed, or intensity <threw a laser into the end zone> <a laser stare>