What is the meaning of Maser?

a device for the coherent amplification or generation of electromagnetic radiation (especially of microwave frequency) by the use of excitation energy in resonant atomic or molecular systems

Any celestial object that generates microwaves using the same method

Obsolete spelling of mazer.

maser

alternative form of macer

A maple bowl or cup, often with metal inlay; a mazer.

The wood of the maple tree or similar wood.

An artificial bone made of maple to repair skull injuries

The maple tree (Acer campestre)

present of mase

maser

masseur

Source: wiktionary.org