1. A very small aperture.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• pincle,
• pinncle,
• pinole,
• pinaple,
• pinacle,
• pigonhole,
• pinicle,
• pinple,
• pinhols,
• pinfolld,
• pinnole,
• pinnhole,
• pinholle,
• pnihole,
• pihnole,
• pinwhole,
• pinnele,
• pithole,
• jinhold,
• inholde

• pianola,
• pinnell,
• pinnule.

The adjective form of the word "pinhole" is "pinhole".

The plural of the "pinhole" can be the "pinholes".

The singular of the "pinhole" can be the "pinhole".