Meaning of “wave” - Learner’s Dictionary

wave

noun [ C ] uk us /weɪv/
WATER

B1 a line of higher water that moves across the surface of the sea or a lake:

I could hear the waves crashing against the rocks.
GROUP

a group of people or things that arrive or happen together or in a short period of time:

There has been a wave of kidnappings in the region.
Another wave of refugees is arriving at the border.
a wave of hatred/enthusiasm/sadness, etc

an emotion that you suddenly feel:

She felt a sudden wave of sadness.
HAND

a movement of your hand from side to side in order to attract someone's attention or say goodbye:

She gave a little wave as the train left.
ENERGY

B2 a piece of sound, light, or other energy that travels up and down in a curved pattern:

a radio wave
→ See also new wave , tidal wave

(Definition of “wave noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)