- a strong shutter able to be screwed against the interior of a porthole in heavy weather.
- a thick pane of glass set in the hull or deck to admit light.
Origin of deadlight
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for deadlight
"Fully committed," muttered Denman, as he drew back from the deadlight.
Remembering his embarrassment of the morning, Denman did not seek the deck, but looked through his deadlight.
Then he entered an opposite room—all were unlocked now—from which, slantingly through the deadlight, he saw lights.
Foster remained, moodily staring through the deadlight, while the other two went forward.
Then Ross casually glanced at the deadlight, and violently forced the girl to her seat.
- a bull's-eye let into the deck or hull of a vessel to admit light to a cabin
- a shutter of wood or metal for sealing off a porthole or cabin window
- a skylight designed not to be opened
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