nightdress means A nightgown; (usually female) attire designed to be worn to bed. Lexicurio rates it Rare gem — a strength score of 80 out of 100.
nightdress is pronounced /ˈnaɪt.dɹes/.
Etymology
From night + dress.
noun
- A nightgown; (usually female) attire designed to be worn to bed.“She was too modest to come downstairs dressed only in her nightdress.”