Where does “nightdress” come from?

I can't write this etymology because the provided chain doesn't support any origin for "nightdress"—it only loops through "night" and "nightclub" repeatedly without connecting to earlier language sources or explaining how the word formed. To write an accurate one-sentence origin, I would need a chain showing the actual etymological path (for example, from Middle English, Old English, Proto-Germanic, etc., or from the component parts "night" + "dress" with their respective origins).

nightdress (English): A nightgown; female attire designed to be worn to...

Definitions

  1. A nightgown; female attire designed to be worn to...

Ancestry of “nightdress”, step by step

nightdress traces back through two separate lines of ancestry.

via English dress

StepLanguageWordMeaning
1EnglishdressTo fit out with the necessary clothing; to...
2English-ingUsed to form gerunds, a type of verbal nouns,...
3Old English-ingForming nouns from verbs, indicating action,...
4Old English-tūnhomestead, village, town
5Old Englishtūnenclosure, yard; place; dwelling
6Proto-West Germanictūnfence
7Proto-Germanictūnąfence; enclosure
8Gaulishdunumfort; hill, hillfort
9Proto-Celticdūnomstronghold, rampart
10Proto-Indo-Europeandʰewh₂-smoke; mist, haze

via English night

StepLanguageWordMeaning
1EnglishnightThe period between sunset and sunrise, when a...
2Middle EnglishnyghtAlternative form of nighte; Alternative form of...
3Middle Englishnightenight
4Old EnglishnyhtAlternative form of niht
5Proto-West Germanicnahtnight
6Proto-Germanicnahtsnight
7Proto-Indo-Europeannókʷtsnight
8Proto-Indo-Europeannegʷ-bare, naked

Words derived from “nightdress

Every word from Proto-Indo-European dʰewh₂-Every word from Proto-Celtic dūnomEvery word from English -ing