Yes, loop is a Scrabble word!

Verb

1. Move in loops

2. Make a loop in

3. Fly loops, perform a loop

4. Wind around something in coils or loops

5. Fasten or join with a loop

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

4. An inner circle of advisors (especially under President Reagan)

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 serially connected in such a way that the last component is connected to the first component

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