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  1. a railing on a sailing vessel, extending forward from abaft the bow to the back of the figurehead.
  2. Also called headbox. a narrow, boxlike case extending across the top of a window blind and covering the mechanical devices by which the blind operates.

Origin of headrail

First recorded in 1815–25; head + rail1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for headrail


  1. billiards snooker the end of the table from which play is started, nearest the baulkline
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