loop-the-loop

plural loop-the-loops

1. The maneuver performed by looping the loop.

   The men in the airplane waved, their white teeth flashing against their sun-baked faces. Then up they flew, did a loop-the-loop, and shot straight up again swinging and twisting, […]

   2009, Claude W. Keenam, Search for the Loony Man, page 266

2. A looped section of track, etc., as on a rollercoaster.

   You'll fly through the game's levels at super speed, running through loop-the-loops and bouncing off bumpers. With Sonic, you'll have the added advantage of spin attacks and the speedy Spin Dash.

   2002, Nintendo Power Advance

3. A yo-yo trick in which the yoyo is made to repeatedly swing around the hand in a looping fashion.