shadow pin

shadow pin

noun Navigation.
a vertical pin set in an azimuth instrument or at the center of a compass card, indicating by the direction of its shadow the azimuth of the sun.

Origin:
1890–95
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Shadow pin is always a great word to know.
So is ninnyhammer. Does it mean:
a fool or simpleton; ninny.
a stew of meat, vegetables, potatoes, etc.
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