'tween deck

American  

noun

Nautical.

1. any space between two continuous decks in the hull of a vessel, as between a shelter deck and a freeboard deck.

---

'tween deck British  

noun

1. nautical a space between two continuous decks of a vessel

---

Etymology

Origin of 'tween deck

First recorded in 1810–20

Example Sentences

Inside, nearly everything above and below decks was rebuilt or replaced, and a new ’tween deck was sandwiched in between the cargo holds and the main deck, the original having been removed in the 1930s.

From New York Times • Sep. 22, 2016

And Wavertree once again has its ’tween deck, a modest level between the main deck and the cargo hold that had been absent for decades.

From New York Times • May 29, 2016

If my soul had gone out of my body, I’d have left the rolling of the ship, the stench in the closed-up ’tween deck, the rats that sometimes scuttle over my face in the night.

From "Blood on the River" by Elisa Carbone

Foul weather makes the ’tween deck even darker.

From "Blood on the River" by Elisa Carbone

“I’ll row the longboat out to the Susan Constant and hide in the ’tween deck.

From "Blood on the River" by Elisa Carbone