Orr

1. A Scottish surname.

   Your God is a reproachful God. But guilt was not the way to get at George Orr; if he had been a man much given to guilt feelings he would not have lived to thirty.

   1971, Ursula K. LeGuin, The Lathe Of Heaven

2. A place in the United States:
   1. An unincorporated community in Lawrence County, Kentucky.
   2. A minor city in St. Louis County, Minnesota.
   3. An unincorporated community in Preston County, West Virginia.

plural ORRs

1. abbreviationinitialismmedicineInitialism of overall response rate or objective response rate.

1. abbreviationinitialismInitialism of Office of Rail and Road, a non-ministerial government department in the United Kingdom.