What do a.m. and p.m. stand for?

pin rail

Theater. a rail on a fly gallery, wall, etc., holding two rows of pins or cleats for securing lines attached to scenery.
Nautical. 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.
Compare fife rail.
Origin of pin rail
1875-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for pin rail
  • Divers will find a kedge anchor, pin rail, wheel and tiller.
British Dictionary definitions for pin rail

pin rail

(nautical) a strong wooden rail or bar containing holes for belaying pins to which lines are fastened on sailing vessels Compare fife rail
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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