a rail, solidly fixed to the bulwarks of a vessel, to which objects on deck can be lashed.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for lash rail
Historical Examples of lash rail
For the time, it was hauled aft out of the way, and secured to the lash-rail.The Cruise of the Cachalot
Frank T. Bullen