peacekeeping operation is a noun meaning "the activity of keeping the peace by military forces (especially when international military forces enforce a truce between hostile groups or nations)". It carries one recorded sense.
the activity of keeping the peace by military forces (especially when international military forces enforce a truce between hostile groups or nations)
military
Definitions, synonyms and semantic relations for peacekeeping operation come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.