buzz

Concise Oxford English Dictionary © 2008 Oxford University Press:
buzz/bʌz/

▶noun

• 1 a low, continuous humming or murmuring sound, made by or similar to that made by an insect.

  ■ the sound of a buzzer or telephone.

  ■ informal a telephone call.

• 2 an atmosphere of excitement and activity.

  ■ informal a thrill.

• 3 informal a rumour.

▶verb

• 1 make a low, continuous humming sound.

  ■ signal with a buzzer.

• 2 move quickly.

  ■ (buzz off) informal go away.

  ■ informal (of an aircraft) fly very close to (something) at high speed.

• 3 (often be buzzing with) have an air of excitement or purposeful activity.

– origin ME: imitative.