pinhole

• Очень маленькое отверстие или прокол, обычно такое, которое можно сделать булавкой.

A very small hole or puncture, typically one that could be made by a pin.

1. Small punctureB1formal

   A tiny hole or puncture, typically one that could be made by a pin or a similar sharp object.

   Маленькое отверстие

   • The fabric had a pinhole where the tag was removed.
   • He noticed a pinhole in the balloon, causing it to deflate slowly.
   • A pinhole in the pipe led to a small leak.

   Синонимыperforationpinprickprickpuncture

2. Optical deviceB2formal

   A very small aperture used in optics, such as in a pinhole camera, to project an image.

   Оптическое устройство

   • The pinhole camera uses a tiny hole to focus light.
   • A pinhole in a piece of cardboard can act as a simple lens.
   • The image formed by a pinhole is always inverted.

   Синонимыaperture