Where does “Spiegelsaal” come from?

Spiegelsaal (German) comes from German spiegel, from Middle High German spiegel, from Old Saxon spiagal, from Proto-Germanic *spēgl, from Medieval Latin speglum, from Latin speculum, from Proto-Italic -klom, from Proto-Indo-European -tlom — Derives agent nouns from verbs, denoting someone...

Spiegelsaal (German): hall of mirrors, a hall whose walls are covered with mirrors

Definitions

  1. hall of mirrors, a hall whose walls are covered with mirrors

Ancestry of “Spiegelsaal”, step by step

Spiegelsaal traces back through two separate lines of ancestry.

via German spiegel

StepLanguageWordMeaning
1Germanspiegelinflection of spiegeln: ## first-person singular...
2Middle High Germanspiegelmirror
3Old Saxonspiagal
4Proto-Germanic*spēgl
5Medieval Latinspeglum
6Latinspeculuma looking-glass, mirror
7Proto-Italic-klom
8Proto-Indo-European-tlomAlternative form of *-trom
9Proto-Indo-European-tromForms nouns denoting a tool or instrument
10Proto-Indo-European-tḗrDerives agent nouns from verbs, denoting someone...

via German Saal

StepLanguageWordMeaning
1GermanSaalhall or large room
2Middle High Germansal
3Old High Germansalhouse, hall; dwelling, house, entrance hall;...
4Proto-West Germanicsālihappiness, prosperity; proper, appropriate time
5Proto-Germanicsalizhouse; dwelling; hall; room
6Proto-Indo-Europeansol-whole
Every word from Proto-Indo-European -tḗrEvery word from Proto-Italic -klomEvery word from Latin speculum