'peacekeeper' definitions:

Definition of 'peacekeeper'

From: WordNet
noun
A member of a military force that is assigned (often with international sanction) to preserve peace in a trouble area
noun
Someone who keeps peace; "she's the peacekeeper in that family"
noun
The pistol of a law officer in the old West

Definition of 'peacekeeper'

From: GCIDE
  • peacekeeper \peacekeeper\ n.
  • 1. a member of a military force that is assigned (often with international sanction) to preserve peace in a trouble area. [WordNet 1.5]
  • 2. someone who keeps peace; as, she's the peacekeeper in that family. [WordNet 1.5]
  • 3. the pistol of a law officer in the old West. [U. S. History] [WordNet 1.5]