ear-duster

ear-duster

Someone who is apt to gossip. Janet's definitely an ear-duster—if you tell her you're pregnant, everyone will know by noon.
Farlex Dictionary of Idioms.

ear-duster

n. a gossipy person. Sally is sort of an “ear-duster,” but she’s all heart.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • on one's
  • on someone's
  • run someone out of town
  • save someone's skin
  • (as) cute as a bug's ear
  • do someone or something justice
  • out of one's
  • (I've) got to go
  • (Have you) been OK?
  • golden shower