If something is buzzing, it's vibrating or making a whirring sound, like a buzzing bee or a buzzing toy airplane. Things making the sound of an angry insect are literally buzzing, like a buzzing doorbell or telephone.

Is Buzzingly a word?

adverb In a buzzing manner; with a buzzing sound.

What is buzzing in slang?

Today's British slang, “to be buzzing”, means to be so happy after something good happens to you, that you feel “high”. The original meaning of buzzing is to feel high from alcohol or drugs, but this slang expression is talking about a natural happy feeling.