toggle

noun

1. a pin, bolt, or rod placed transversely through a chain, an eye or loop in a rope, etc., as to bind it temporarily to another chain or rope similarly treated.
2. a toggle joint, or a device having one.
3. an ornamental, rod-shaped button for inserting into a large buttonhole, loop, or frog, used especially on sports clothes.
4. Theater.
   1. Also called toggle rail.a wooden batten across the width of a flat, for strengthening the frame.
   2. Also called toggle iron.a metal device for fastening a toggle rail to a frame.

verb (used with object), tog·gled, tog·gling.

5. to furnish with a toggle.
6. to bind or fasten with a toggle.
7. Informal. to turn, twist, or manipulate a toggle switch; dial or turn the switch of (an appliance): He toggled the TV between the baseball game and the news.

noun

1. a wooden peg or metal rod fixed crosswise through an eye at the end of a rope, chain, or cable, for fastening temporarily by insertion through an eye in another rope, chain, etc
2. a wooden or plastic bar-shaped button inserted through a loop for fastening
3. a pin inserted into a nautical knot to keep it secure
4. machinery a toggle joint or a device having such a joint

verb

5. (tr) to supply or fasten with a toggle or toggles
6. computing (intr, often foll by between) to switch to a different option, view, application, etc