1
- a light sandal, typically of plastic or rubber, with a thong between the big and second toe（塑料, 橡胶）平底人字拖鞋。
2
- N. Amer. a backward somersault or handspring〈北美〉后空翻, 后手翻。
2.1
- informal an abrupt reversal of policy〈非正式〉政策突然转向, 政策突变：
his flip-flop on taxes.
他税收政策的突变。
3
- Electronics a switching circuit which works by changing from one stable state to another, or through an unstable state back to its stable state, in response to a triggering pulse【电子】触发电路。
no obj.
1
- with adverbial of direction move with a flapping sound or motion啪嗒啪嗒移动：
she flip-flopped off the porch in battered trainers.
她穿了双破运动鞋啪嗒啪嗒跑下门廊。
2
- N. Amer. informal make an abrupt reversal of policy〈北美, 非正式〉突然改变政策：
the candidate flip-flopped on a number of issues.
候选人在若干政策问题上突然变调。
词源
mid 17th cent. （in the general sense 'something that flaps or flops'）： imitative reduplication of FLOP.