Where does “rainbow ceiling” come from?

rainbow ceiling (English) comes from English rainbow, from German Regenbogen, from Middle High German rëgenboge, from Old High German reginbogo, from Proto-Germanic regnabugô, from Proto-Germanic bugô, from Proto-Indo-European bʰugʰ-, from Proto-Indo-European bʰewgʰ- — to bend; curve, arch.

rainbow ceiling (English): An informal barrier to promotion or advancement,...

Definitions

  1. An informal barrier to promotion or advancement,...

Ancestry of “rainbow ceiling”, step by step

rainbow ceiling traces back through two separate lines of ancestry.

via English rainbow

StepLanguageWordMeaning
1EnglishrainbowA multicoloured arch in the sky, produced by...
2GermanRegenbogenrainbow
3Middle High Germanrëgenboge
4Old High Germanreginbogorainbow
5Proto-Germanicregnabugôrainbow
6Proto-Germanicbugôbow
7Proto-Indo-Europeanbʰugʰ-bow; arch
8Proto-Indo-Europeanbʰewgʰ-to bend; curve, arch

via English ceiling

StepLanguageWordMeaning
1EnglishceilingThe overhead closure of a room; The upper limit...
2Middle Englishcelingpaneling; cover or hanging
3Middle Englishcelento cover or panel walls
4Old Frenchcelerto conceal
5Latincelōto hide (something from someone), cover, keep a secret, conceal
Every word from Proto-Indo-European bʰewgʰ-