/ Dictionary / Index S shadow pin: Meaning and Definition of Find definitions for: shad'ow pin" Pronunciation: [key] — Navig. Navig. 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. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. shadow mask shadow play Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language