Noun
1. fastener consisting of a metal ring for lining a small hole to permit the attachment of cords or lines
2. anything with a round or oval shape (formed by a curve that is closed and does not intersect itself)
3. (computer science) a single execution of a set of instructions that are to be repeated;
"the solution took hundreds of iterations"4. an inner circle of advisors (especially under President Reagan);
"he's no longer in the loop"5. the basic pattern of the human fingerprint
6. a computer program that performs a series of instructions repeatedly until some specified condition is satisfied
7. the topology of a network whose components are connected in a loop
8. an intrauterine device in the shape of a loop
9. a complete electrical circuit around which current flows or a signal circulates
10. a flight maneuver; aircraft flies a complete circle in the vertical plane