a continuous noise like the sound of a bee
the buzz of mosquitoes
a lot of activity, noise, and excitement
the buzz of conversation and laughter
3 [singular] informal
a strong feeling of excitement, pleasure, or success, or a similar feeling from drinking alcohol or taking drugs:
Playing well gives me a buzz.
Neil gets a buzz from drinking one beer.
to telephone someone:
I'll give you a buzz on Monday.
unofficial news or information that is spread by people telling each other [↪ gossip, rumour]