wave
noun [ C ]
uk/weɪv/ usa larger than usual number of events of a similar, often bad, type, happening within the same period:
a wave of sth During the recession there was a wave of bankruptcies and mass unemployment.
a crime wave
the pattern in which some types of energy, such as sound, light, and heat, are spread or carried:
light/sound/radio waves Large amounts of data is transmitted via light waves inside fiberoptic cables.
make waves
to do things that make people notice you, often in a way that causes trouble:
Sometimes, an employee feels intimidated by workplace bullying, but, they don't want to make waves.