Definition of ruse de guerre in US English:

ruse de guerre

noun

  • A stratagem; especially one intended to deceive an enemy in war. Hence: a justifiable trick or deception.

Origin

Mid 18th century; earliest use found in Richard Griffith (d. 1788), writer. From French ruse de guerre from ruse + de + guerre.

Pronunciation

ruse de guerre

/ˌruːz də ˈɡɛː/