pinhole

• pin-hole

pin +‎ hole

pinhole (plural pinholes)

1. A small hole, of a size that could have been made by a pin
2. The aperture in a pinhole camera or camera obscura
   • 2012, Caspar Henderson, The Book of Barely Imagined Beings, page 216:

     These [the eyes of the nautilus] are the simplest eyes of any large living animal -- lensless 'pinholes' that project a hazy and rather dim image onto its retinas.

• pinhole camera
• pinhole chert
• pinhole detector
• pinhole glasses
• pinhole grass
• pinhole pupil

pinhole (third-person singular simple present pinholes, present participle pinholing, simple past and past participle pinholed)

1. (transitive) To form one or more pinholes in.

• lophine