Origin: 1175–1225; < Latin ornāmentum equipment, ornament, equivalent to ornā(re) to equip + -mentum-ment; replacing Middle English ornement < Old French < Latin, as above
early 13c., "an accessory," from O.Fr. ornement, from L. ornamentum "equipment, trappings, embellishment," from ornare "equip, adorn" (see ornate). Meaning "decoration, embellishment" is attested from late 14c. The verb is first recorded 1720, from the noun.