Meaning of “buzz” - Learner’s Dictionary

buzz

verb [ I ] uk us /bʌz/
SOUND

to make a continuous sound like a bee:

I can hear something buzzing.
ACTIVITY

to be full of activity or excitement:

The crowd was buzzing with excitement.
buzz about/around, etc

to move around in a quick and busy way

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