Focus on the pronunciation of laser
English definition of “laser”
/ˈleɪzər/ noun [C]
› a device that produces a powerful narrow beam of light that can be used as a tool, for example to cut metal, to perform medical operations, etc. The beam of light is also known as a laser: It shines a laser beam on to the surface of the disc to read the pattern of the bumps. Our team are engaged in the research of laser technology. They now use a laser gun for reading barcodes.