• synonyms

shadow pin

See more synonyms for shadow pin on Thesaurus.com
noun Navigation.
  1. 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.
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Origin of shadow pin

First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018