flip-flap 后手翻
flip-flap[ adv ]
with repeated strokes and noise
<adv.all>
something going flip-flap in the night
Flip-flap \Flip"-flap`\, n. [See {Flip}, and {Flap}.]
The repeated stroke of something long and loose. --Johnson.
Flip-flap \Flip"-flap`\, adv.
With repeated strokes and noise, as of something long and
loose. --Ash.