In the fictional world of the book series Winnie-the-Pooh by A. A. Milne, Roo is a young joey (a baby Kangaroo) who is a good friend of Winnie-the-Pooh. He's Kanga's son and Tigger's best friend.

(v.) -- To make the loud "arrroooo" sound when warning of intruders or announcing a wonderful hunting scent.

Rule of origin.

Rules of Origin. Laws, regulations and administrative procedures which determine a product's country of origin. A decision by a customs authority on origin can determine whether a shipment falls within a quota limitation, qualifies for a tariff preference or is affected by an anti-dumping duty. These rules can vary from country to country.

Reliability Of Operation

Measurement of benefit an exhibiting company receives for participation at an exhibition by company pre-set objectives to show success.

Short for rooster.