peephole

n.

窥视孔；

复数：peepholes

1. He squinted through the peephole.
   他眯起眼睛靠近窥视孔看了看。
2. But the instant she closed the door, she peered through the peephole and saw he was still standing by the gate.
   然而，她刚一关上房门，就迫不及待地从门镜中向外望去，只见他仍然站在外面的大门旁。

Peephole optimization
Peephole Partial Order Reduction
Using Peephole Optimization on Intermediate Code
Provably correct peephole optimizations with alive
Peephole displays:pen interaction on spatially aware handheld computers
Automatic generation of peephole superoptimizers
Binary translation using peephole superoptimizers
The Design and Application of a Retargetable Peephole Optimizer
Navigating on handheld displays:Dynamic versus static peephole navigation
Corrigendum: ``The Design and Application of a Retargetable Peephole Optimizer''