twiddle

1.[i][t]（常因紧张或无聊）旋弄，摆弄，捻弄（物件）to twist or turn sth with your fingers often because you are nervous or bored

twiddle your thumbs

抱手旋弄大拇指to move your thumbs around each other with your fingers joined together

1.拧；转动a twist or turn

2.（图案等的）修饰性曲线，螺旋形线条；（乐曲的）装饰音a decorative twist in a pattern, piece of music, etc.

1.捻弄

2.玩弄 (with)

3.花式弹奏

4.〈英方〉忙于琐事

1.捻

2.波状线,波纹

1.to turn a switch on a piece of equipment or a machine

2.to twist or turn something in a bored or nervous way