pin-hole

pinhole

[pin-hohl]
noun
1.
a small hole made by or as by a pin.
2.
a hole for a pin to go through; tiny aperture.

Origin:
1670–80; pin + hole

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World English Dictionary
pinhole (ˈpɪnˌhəʊl)
 
n
1.  a small hole made with or as if with a pin
2.  archery the exact centre of an archery target, in the middle of the gold zone

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