/ Dictionary / Index P pin rail: Meaning and Definition of Find definitions for: pin' rail" Pronunciation: [key] a rail on a fly gallery, wall, etc., holding two rows of pins or cleats for securing lines attached to scenery. a strong rail at the side of the deck of a vessel, for holding the pins to which some of the running rigging is belayed. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pinprick PINS Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language