lower deck

American  

[loh-er] / ˈloʊ ər /

noun

Nautical.

1. the lowermost deck in a hull having two or three decks.

2. the deck next above the lowermost, or orlop, deck in a hull having four or more decks.

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lower deck British  

noun

1. the deck of a ship situated immediately above the hold

2. informal the petty officers and seamen of a ship collectively

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Etymology

Origin of lower deck

First recorded in 1700–10