masers

/M EY1 Z ER0 Z/
noun
  1. 1

    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

  2. 2

    Any celestial object that generates microwaves using the same method

noun
  1. 1

    The maple tree, or maple wood.

  2. 2

    A large drinking bowl made from such wood; a mazer bowl.

Source: https://en.wiktionary.org/wiki/maser, https://en.wiktionary.org/wiki/masers, https://en.wiktionary.org/wiki/mazer