Blabbermouth

//ˈblæb.ə(ɹ)ˌmaʊθ// noun, slang

Definitions

Noun
  1. 1
    A gossip. derogatory, informal

    "If it weren't for that blabbermouth Sally, the principal would never have known we did it."

  2. 2
    someone who gossips indiscreetly wordnet
  3. 3
    A person who talks excessively. derogatory, informal
  4. 4
    A kind of foam-dispensing nozzle used in firefighting at airports.

    "Two handlines are capable of 240 gpm and an undertruck "blabbermouth" nozzle can sweep the ground ahead at 240 gpm."

Etymology

From blabber + mouth.

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