Feature of a rollercoaster that turns passengers upside down

noun

1. A curving or doubling of a line so as to form a closed or partly open curve within itself through which another line can be passed or into which a hook may be hooked
2. Such a fold of cord or ribbon serving as an ornament
3. Something shaped like or suggestive of a loop
4. A circular airplane maneuver executed in the vertical plane
5. A ring or curved piece used to form a fastening, handle, or catch
6. A piece of film or magnetic tape whose ends are spliced together so as to project or play back the same material continuously
7. A continuously repeated segment of music, dialogue, or images

   "a drum loop"

8. A series of instructions (as for a computer) that is repeated until a terminating condition is reached
9. A select well-informed inner circle that is influential in decision making

   "out of the policy loop"

10. A closed electric circuit
11. A sports league

verb

1. To make or form a loop
2. To move in loops or in an arc
3. To execute a loop in an airplane
4. To make a loop in, on, or about
5. To fasten with a loop
6. To cause to move in an arc
7. To join (two courses of loops) in knitting
8. To connect (electric conductors) so as to complete a loop

noun

1. Loophole

noun phrase

1. The U-shaped part of the nephron of birds and mammals that lies between and is continuous with the proximal and distal convoluted tubules and that functions in water resorption

idiom

1. To perform a loop in an airplane

noun

1. An automatic control system in which an operation, process, or mechanism is regulated by feedback

noun

1. A sharp uncontrollable turn made by an aircraft on the ground and usually caused by an unbalanced drag (as from a wingtip touching the ground)

noun

1. Loop of henle

noun

1. An S-shaped plastic intrauterine device

noun

1. A control system for an operation or process in which there is no self-correcting action as there is in a closed loop