lower deck meaning
EN- NounPLlower decks
- (countable, nautical) The deck of a ship immediately above the hold.
- (uncountable, nautical, by extension) Those members of a ship's company who are not officers.
- (countable, nautical) The deck of a ship immediately above the hold.
Definition of lower deck in English Dictionary
- Part-of-Speech Hierarchy
- Nouns
- Countable nouns
- Singularia tantum
- Uncountable nouns
- Uncountable nouns
- Countable nouns
- Nouns
Source: Wiktionary
Grammatically, this idiom "lower deck" is a noun, more specifically, a countable noun and a singularia tantum.