tog·gle
noun/ˈtɒɡl/
/ˈtɑːɡl/
- a short piece of wood, plastic, etc. that is put through a loop of thread to fasten something, such as a coat or bag, instead of a button
enlarge image（大衣或口袋等上木质或塑料的）栓扣钉，棒形纽扣，套索扣 - (also toggle switch)(computing) a key on a computer that you press to change from one style or operation to another, and back again
转换键；切换键
Word Originmid 18th cent. (originally in nautical use): of unknown origin.