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Related to pinhole: pinhole test, Pinhole Photography


A tiny puncture made by or as if by a pin.


1. a small hole made with or as if with a pin
2. (Archery) archery the exact centre of an archery target, in the middle of the gold zone



1. a small hole made by or as if by a pin.
2. a hole for a pin to go through; tiny aperture.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pinhole - a small puncture that might have been made by a pinpinhole - a small puncture that might have been made by a pin
puncture - a small hole made by a sharp object
ثَقْب صَغير
malá dírka
tûhegynyi lyuk
malá dierka
iğne deliği


A. Nagujero m de alfiler
B. CPD pinhole camera Ncámara f de agujero de alfiler


[ˈpɪnhəʊl] ntrou m d'épingle


(pin) noun
1. a short, thin, pointed piece of metal used eg to hold pieces of fabric, paper etc together, especially when making clothes. The papers are fastened together by a pin.
2. a similar but more ornamental object. a hat-pin.
verbpast tense, past participle pinned
1. to fasten with a pin. She pinned the material together.
2. to hold by pressing against something. The fallen tree pinned him to the ground.
ˈpincushion noun
a small cushion or similar object into which pins are pushed for keeping.
ˈpinhole noun
a hole made by a pin. A pinhole camera does not need a lens.
ˈpinpoint verb
to place or show very exactly. He pinpointed the position on the map.
ˈpin-up noun
1. a picture of an attractive girl (or man), often pinned on a wall. He has dozens of pin-ups in his room; (also adjective) a pin-up girl.
2. the girl (or man). She's the favourite pin-up of the soldiers.
pin down
to make (someone) give a definite answer, statement, opinion or promise. I can't pin him down to a definite date for his arrival.
pins and needles
a tingling feeling in one's hands, arms, feet or legs. I've got pins and needles in my arm.
References in classic literature ?
Again and again I went carefully over every square inch of its surface, but the most that I could find was a tiny pinhole a little above and to the right of the door's center--a pinhole that seemed only an accident of manufacture or an imperfection of material.
I thought I knew, and, seizing a powerful magnifying glass from the litter of my pocket-pouch, I applied myself to a careful examination of the marble immediately about the pinhole in the door.
It was evident that for countless ages radium torches had been applied to this pinhole, and for what purpose there could be but a single answer--the mechanism of the lock was actuated by light rays; and I, John Carter, Prince of Helium, held the combination in my hand--scratched by the hand of my enemy upon his own torch case.
For fifty tals I let three units of light shine full in the pinhole, then one unit for one xat, and for twenty-five tals nine units.
Little Toomai turned, rustling in the fodder, and watched the curve of his big back against half the stars in heaven, and while he watched he heard, so far away that it sounded no more than a pinhole of noise pricked through the stillness, the "hoot-toot" of a wild elephant.
The option of a pinhole projector means you can experience the eclipse without looking at the sun with glasses or a filter.
A pinhole acts like a tiny lens, creating a focused image.
Furthermore, it defines the exact structure of defect groups and complex corrosion like preferential girth weld corrosion, top-of-the-line corrosion (TOLC), pinholes in general corrosion, pinhole colonies, and microbiologically induced corrosion (MIC).
Opportunities for adolescents to participate in extended journeys in remote and challenging environments are rare; as such, our remote 16-day canoe journey in Northern Canada's Yukon Territory afforded a unique opportunity to learn from two adolescent participants (Andrew, 13 years of age, and Stephanie, 15 years of age) about the nature/essence of their experiences in wild nature, and in particular, the use of pinhole photography as a medium to capture and support these experiences.
mirror with a piece of paper or card with a hole in it, then project a pinhole image of the eclipse onto a wall.
SEEING THE SOLAR ECLIPSE WITH A PINHOLE PROJECTOR ONE of the cheapest and most simple ways of seeing the eclipse is by a pinhole projector.
The TQC Low Voltage Pinhole detector from Gardco enables users to inspect various coatings on conductive substrates for small defects such as holidays and pinholes using the "wet sponge technique.