Merriam-Webster Collegiate Dictionary - accoutrement

 or accouterment  noun  Date: 1549  1.  a. equipment, trappings; specifically a soldier's outfit usually not including clothes and weapons — usually used in plural  b. an accessory item of clothing or equipment — usually used in plural  2. archaic the act of accoutring  3. an identifying and often superficial characteristic or device — usually used in plural ~s of power that define our diplomacy — Elizabeth Drew