Definitions
1.NounSomething that toggles between two states or causes something else to toggle between two states.
2.NounA machine operator who is responsible for turning the machine on and off.
3.NounA type of fastener that has hinged wings that spread to provide a surface against which the fastener can be tightened (e.g. a toggle bolt).
4.NounA person occupied chaining up logs to prevent them from rolling off during transport on railroad cars and trucks.
5.NounA member of a bomber crew responsible dropping bombs from a wing plane at a signal from the lead bombardier.