check rail

or check·rail

noun

(in a window sash) a meeting rail, especially one closing against the corresponding rail with a diagonal or rabbeted overlap.

Compare plain rail.

Origin of check rail

First recorded in 1875–80

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for checkrail

checkrail

noun

British another word for guardrail (def. 2)

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