noun An electromagnetic wave with wavelength between that of infrared light and radio waves.
Many radar systems use a combination of radio waves and microwaves.
noun Ellipsis of microwave oven.
Just put it in the microwave for 30 seconds and it's ready to eat.
verb To cook (something) in a microwave oven.
verb To provide minimal preparation for implementation, deeming full or extensive preparation to be unnecessary. (Can we add an example for this sense?)