toggle
Pronunciation: /ˈtɒg(ə)l/
noun
- 1a short rod of wood or plastic sewn to one side of a coat or other garment, pushed through a hole or loop on the other side and twisted so as to act as a fastener.
- a pin or other crosspiece put through the eye of a rope or a link of a chain to keep it in place.
- (also toggle bolt) a kind of wall fastener for use on open-backed plasterboard, having a part that springs open or turns through 90° after it is inserted so as to prevent withdrawal.
- a movable pivoted crosspiece acting as a barb on a harpoon.
verb

Origin:
mid 18th century (originally in nautical use): of unknown origin